IMPORTANT SVP:ÉQUATION!! A=7x+8=2x+5 B=3(t-2)=-7(t-9)

A= 7x + 8 - 8 = 2x + 5 - 8 
A= 7x = 2x -3 
A= 7x - 2x = 2x - 2x -3
A= 5x = -3
A= 5x : 5 = -3 : 5
A= x = -0.6

B= 3t -6 = -7t + 63
B= 3t -6 +6 = -7t +63 +6
B= 3t = -7t +69
B= 3t + 7t = -7t +7t +69
B= 10t = 69
B= 10t : 10 = 69 : 10
B= t = 6,9