21 A
I think of a number and subtract 5 from it the final result is 30
Solve for x
x - 5 = 30
x = 35
I think of a number and divide it by 4 the final result is 10
solve for x
x = 40
I think of a number multiply it by 3 the final result is -7
3x = -7
x = -7/3
I think of a number divide it by 5 and subtract it by 4 the final result is 20
X/4 - 5 = 20
x/4 = 25
x = 25/4
I think of a Number multiply it by 3 then add 7 to it the final result is 14
3x = 7
x = 7/3
Mohammed has x sons and 4 daughters. In total he has 6 children. How many sons does he have.
x = 2
he has 2 sons
When a number is doubled, the result is 30. Find the number
x = 15
When a number is trebled, the result is 39. Find the number
3x = 39
x = 13
x/2 = 3
x = 6
When a certain number is trebled, then 5 is added to it. The result is 20
3x + 5 = 20
3x = 15
x = 5
When a number is halved then subtracted by 5. The final result is 40.
x/2 - 5 = 40
x/2 = 45
x = 45/2
When 5 is added to a number then the result is doubled. The final result is 14.
2{ x + 5 } = 14
2x + 10 = 14
2x = 4
x = 2
When a certain number is subtracted by 10 then the result is trebled. The final answer is 53.
3{ x - 10 } = 53
3x - 30 = 53
3x = 83
x = 83/3
When a certain number is subtracted by 7, the result is divided by 4 and the final result is 42.
x - 7 = 80
x = 87
3x - 4 = 40
3x = 44
x = 44/3
Abdullah weighs x kg, Sultan weighs 30 kg more than Abdullah, in total they weigh 100 kg
x + 30 + x = 100
2x + 30 = 100
2x = 70
x = 35
The lakers won yesterday’s basketball game. Scoring 12 more points than the warriors. In total 150 points were scored in the the game. How many points did the lakers score.
x + 12 + x = 152
2x + 12 = 152
2x = 140
x = 70
Omar bought 4 packets of cigarettes. He smoked 10 cigarettes and put the remaining 40 in a bag. How many cigarettes were in each packet.
4p - 10 = 40
4p = 50
p = 50/4
p = 25/2
Josh has a sister who weighs x kg. Josh weighs 20 kg less than his sister Geniqua. In total they weigh 104 kg. How much kg does Josh weigh
x + x - 20 = 104
2x - 20 = 104
2x = 124
x = 62
Sylvia has x Sr in her bank account, depositing 100 Sr into her account would triple the amount of money in her account.
Sultan cuts some roses in his front garden, and another 20 roses in his back garden. She uses one quarter of his roses to make a bouquet of a dozen flowers. How many roses did Sultan cut in his front garden
x + 20/4 = 12
x + 20 = 48
x = 28
Class A had 40 students and class B had 32 students. A number of students from class A were moved to class B and now they have the same number of students. How many students were moved
40 - x = 32 + x
40 - 2x = 32
-2x = - 8
x = 4
John buys x sweets. Josh buys 5 more than John.
Mustafa buys twice the amount of John. Write me an expression for how much Josh bought in terms of x
John = x
Josh = 5 + x
Mustafa = 2x
Josh bought 5 + x sweets
I took y minutes to walk to the shop and the same time to walk back. I spent 11 minutes in the shop. In total the journey was 40 minutes more than the original number
y + y + 11 = 40 + y
2y + 11 = 40 + y
y + 11 = 40
y = 29
When 8 is added to a certain number and the result is doubled the final answer is 4 more than the original number
2{8 + x} = x + 4
16 + 2x = x + 4
16 + x = 4
x = - 12