Question

Equação me ajudar
A)4 (×-4)+3=7 (×-3)-9

B)12-3 (4×+5)-7=4 (3×-7)-5

Me ajuda pfv

Answer 1

4x-16+3=7x-21-9
4x-7x=-30+16+3
3x=-30+19
3x-21
x=-21÷3
x=-7


12-12x-15-7=12x-28-5
-12x-12x=-28-5-12+15+7
-24x=-33-12+22
-24x=-45+22
-24x=-23

Answer 2

a)

4x -16 +3 = 7x -21 -9

4x -13 = 7x -30

-13 +30 = 7x -4x

17/3 = x

b)

12 -12x -15 -7 = 12x -28 -5

-12x -10 = 12x -33

33 -10 = 12x +12x

23/24 = x