Question

A/2+3(-a+2)=-3+2a

7y-1,5=25-(y+1,5)

Answer 1

a/2 + 3(-a+2) = -3+2a
a/2 -3a+6 = -3 +2a
a - 2(3a -6) = 2(-3+2a)
a - 6a-12 = -6 +4a
-5a -12 =-6+4a
-5a- 4a = -6 +12
- 9a = 6
-a = 6/9 (÷3)
-a= 2/3 (-1)
a= - 2/3
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7y - 1,5 = 25 - ( y + 1,5)
7y - 1,5 = 25 - y + 1,5
7y - y =25+1,5 + 1,5
6y = 26,5 + 1,5
6y = 28
y = 28/6 (÷2)
y=14/3
y= 4,66.....