Question

30-3（3-X）=4X 3X+12*6=15X+12 4X-2(50-X)=20 12(X-13)=10(X+3) 1

Answer 1

30-3（3-X）=4X

30-9+3x=4x

21=x

x=21

3X+12*6=15X+12

72-12=15x-3x

12x=60

x=5

4X-2(50-X)=20

4x-100+2x=20

6x=120

x=20

12(X-13)=10(X+3)

12x-156=10x+30

2x=186

x=93

100-X=3(20+X)

100-x=60+3x

40=4x

x=10