Write an equivalent expression. 1. 8(y - 7)

2. -2x + 7

3. 3/5x + 2/5 + 3/5x

8(y - 7) =8y-7-2x+7=7/2=3.5

Letter a (: : : : : : : : : :

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!