Question

A) 4m - 12 = 20
B) 5x/3 = -15
C) 7/2 x + 9/5 -2/3
D) 6/13 m-8/7 =-3/13

Answer 1

$4m - 12 - 20 = 0 \\ (2m + 2)(2m - 10) \\ 2m + 2 = 0 \: 2m - 10 = 0 \\ m = - 2 \div - 2 = - 1 \\ m = 2 \div 10 = 5$