Question

equação 7x+8 =12 . 3x

Answer 1

7x+8=12.3x
7x+8=36x
7x-36x=-8
-29x=-8
x=-8/-29

espero ter ajudado

Answer 2

7x+8 =12 . 3x
7x +8= 36x
7x-36x= 8
-29x= 8(-1)
+29x= -8
x= -8/29