Question

a) 2 (-3×+4)=-5 (×+10)

Answer 1

-6x+8=-5x-50
-6x+5x=-50-8
-x=-58(-1)=
x=58

Answer 2

$2 (-3x+4)=-5 (x+10) \\ -6x + 8 = -5x - 50 \\ -6x + 5x = - 50 - 8 \\ -x = -58 .... (-1)\\ x = 58 \\ \\ \boxed{\bf{ REsposta : x = 58 }}$