7(6х+1)+4(2-3х)-9(9х+4)=30

Question

7(6х+1)+4(2-3х)-9(9х+4)=30

Answer 1

42х + 7 + 8 - 12х - 81х - 36 = 30
42х - 12х - 81 х = 30 - 7 - 8 +36
-51х = 51
х = -1