А)4(1-0.5)=-2(3+2x) б)5(x+1.2)=12.5x

Question

А)4(1-0.5)=-2(3+2x) б)5(x+1.2)=12.5x

Answer 1

4 * (1 - 0,5) = - 2 * (3 + 2х)
4 - 2 = - 6 - 4х
2 + 6 = - 4х
8 = - 4х
х = 8 : (- 4)
х = - 2
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5 * (х + 1,2) = 12,5х
5х + 6 = 12,5х
5х - 12,5х = - 6
- 7,5х = - 6
х = 6 : 7,5
х = 0,8
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Answer 2

4(1-0.5)=2(3+2х)
4-2=6+4х
2=6+4х
-4х=4
х=-1
5(х+1.2)=12.5х
5х+6=12.5х
5х-12.5х=-6
-7.5х=6
х=0.8