Question

6*(3*x-4)-5*(4-x)=12x+7


9*(2x-3)-6*(5x+7)=1-2x
Rezolvati ecuatiile va rog
!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

$\displaystyle a).6(3x-4)-5(4-x)=12x+7 \\ 18x-24-20+5x=12x+7 \\ 18x+5x-12x=7+24+20 \\ 11x=51 \\ x= \frac{51}{11} \\ b).9(2x-3)-6(5x+7)=1-2x \\ 18x-27-30x-42=1-2x \\ 18x-30x+2x=1+27+42 \\ -10x=70 \\ x=- \frac{70}{10} \\ x=-7$