Question

a) 3а + 2(2а-3)=8-7(а-2)
b) 2(7с-7)=7(2с-3)+7

Answer 1

$a)3a + 2(2a - 3) = 8 - 7(a - 2) \\ 3a + 4a - 6 = 8 - 7(a - 2) \\ 3a + 4a - 6 = 8 - 7a + 14 \\ 7a - 6 = 8 - 7a + 14 \\ 7a - 6 = 22 - 7a \\ 7a - 6 + 7a = 22 \\ 7a + 7a = 22 + 6 \\ 14a = 22 + 6 \\ 14a + 28 \\ a = 2$