The sum of a number and 24 is 50. Find the number.
x = 26
200
x - 5 = -15
x = -10
200
6x = 3x + 12
x = 4
200
3(x - 4) = 6
x = 6
200
-(x/3) = 10
x = -30
200
If 6 is subtracted from 4 times a number, the answer is 30. Find the number.
x = 9
300
8x = -64
x = -8
300
10x - 3 = 8x + 11
x = 7
300
8(m + 1) = 5(m - 2)
x = -6
300
(x+5)/-2 = -10
x = 15
300
If 3 times a number is decreased by 5, the answer is 10.
x = 5
400
-2x + 3 = 13
x = -5
400
3 + 5x = 2x - 12
x = -5
400
10 + 2(x - 1) = 16
x = 4
400
(7 - 5m)/2 = (1 - 9x)/4
m = 13
400
The length of a rectangle is 3.5 cm longer than its width. If the perimeter is 47 cm, what is the width?
Width is 10 cm
500
3x^2 = 75
x = +/- 5
500
2x - 4 = 6x - 6
x = 1/2
500
5y + 2(y - 3)= 4y + 2(2y + 10)
y = -26
500
3x/2 + x/2 = 11
x = 10
500
William is three times as old as his daughter, Rebecca. Rebecca is six years younger than her
brother, Ben. How old is Rebecca if the sum of their three ages is 76 years?