Question

a)-15x+12+3.(2x-6)=3x-(21x-1)+2
b) 4-2.(3-x)+5x-7=12x-19
c) (9x+6):3+2=13
d) (8x-6):2=3x-((6-2x)+7
e) (12x+8):4=(9x-6):3+4
f) -3x+2-5(7-8x)=4x-3x-(2x+3)+27x

Answer 1

A) -15x+12+6x-18=3x-21x+1+2

-9x-6=-18x+3

-9x+18x=3+6

9x=9

X=9/9

X=1

B) 4-6+2x+5x-7=12x-19

4-13+19=12x-7x

10=5x

10/5=x

X=2

c) (9x+6):3+2=13

9x+6= 13×5

9x=65-6

X=59/9

d) (8x-6):2=3x-(6-2x)+7

8x-6/2=3x-6+2x+7

8x-6/2=5x+1

8x-6-5x=1×2

3x=2+6

X=8/3

e) (12x+8):4=(9x-6):3+4

(12x+8)×7=(9x-6)×4

84x+56=36x-24

84x-36x=-24-56

48x=-80

X=80/48

X=5/3

f) -3x+2-5(7-8x)=4x-3x-(2x+3)+27x

-3x+2-35+40x=28x-2x-3

37x-33=26x-3

37x-26x=-3+33

11x=30

X=30/11