Question

-7m + 3 = -4 qual valor de m?

Answer 1

-7m + 3 = -4

-7m = -4 - 3

-7m = -7

m = -7/-7

m = 1

Answer 2

-7m + 3 = -4

-7m = -4-3

-7m = -7

-m = -7/7

(-) -m = -1 (-)

m =1