combining expressions
3y+7+2y
What is 5y+7?
six less a number
What is x-6?
y + 17 = 36
What is y = 19?
Work:
y +17-17=36-17
y=19
If a= 12 and b = 22 and c = 13, evaluate 3a + b.
What is 58?
Work:
3*12+22=
36+22=
58
Joe had some video games. His friend gave him 5 more. Now he has 24 video games. How many video games did Joe have before his friend gave him more? Write an equation to show this problem.
What is y + 5 = 24?
Work:
y=Joe's video games
friend gave to him: add 5
y+5=24
9y+7-3-6y
What is 3y+4?
the sum of five and a number
What is 5+n?
23-y= 14
What is y=9?
Work:
23-23-y=14-23
-y=-9
-y / -1 = -9 / -1
y=9
If a = 10 and b = 22 and c= 14, evaluate 2b + 3c.
What is 86?
Work:
2*22+3*14=
44+42=
86
Mary gave her brother $12.00 on his birthday. He spent some money at the arcade yesterday. If he has $7.75 left. How much money did he spend? Write an equation to show this problem.
What is 12- y = 7.75?
Work:
y=money spent
starts with $12
12-y=7.75
2y+3+9y+4-5
What is 11y+2?
the product of a number and 11
What is 11n?
3y + 14 = 32
What is y=6?
Work:
3y+14-14=32-14
3y=18
3y/3 = 18/3
y=6
If a = 4 and b= 5 and c = 12, evaluate ab + 4c.
What is 68?
Work:
4*5+4*12=
20+48=
68
Max scored 5 points in the game and Jose scored twice as many. They are the only two players who scored. What was their total score as a team?
What is 15 points?
Work:
Max=5
Jose=2*Max=2*5=10
Max+Jose=5+10=15
6-3+7y-8y-12
What is -y-9?
six times a number plus three
What is 6x+3?
6y - 23 = 13
What is y=6?
Work:
6y-23+23=13+23
6y=36
6y/6=36/6
y=6
If a= 13, b= 23, and c= 11, evaluate 3a + b - c.
What is 51?
Work:
3*13+23-11=
39+23-11=
62-11=
51
Omar is 1/2 as old as John is. If their combined age is 24, how old is Omar and John?
What is "Omar is 8 years old and John is 16 years old."?
Work:
x=John
x/2=Omar
John + Omar = 24
x+x/2=24 (multiply all by 2)
2x+x=48 (combine like terms)
3x=48
3x/3=48/3
x=16
x/2=16/2=8
y+13+5y-17
What is 6y-4?
a number less than twenty three
What is 23-x?
14 + 5y = 39
What is y=5?
Work:
14-14+5y=39-14
5y=25
5y/5=25/5
y=5
If a= 22, b= 14, and c= 11, evaluate c (a- b).
What is 88?
Work:
11(22-14)=
11*8=
88
I have three times as many dimes as nickels. If my total is $1.05, how many nickels and dimes do I have?
What is 3 nickels and 9 dimes?
Work:
n=nickels
3n=dimes
0.05n+0.10(3n)=1.05
0.05n+0.30n=1.05 (Multiply all by 100)
5n+30n=105 (combine like terms)
35n=105
35n/35=105/35
n=3