- 3(2,1x - 4 ) - 4,2 - 1,2 (- 5x + 0,5) = 0

Question

- 3(2,1x - 4 ) - 4,2 - 1,2 (- 5x + 0,5) = 0

Answer 1

-3(2.1x-4)-4.2-1.2(-5x+0.5)=0
-6.3x+12+4.2+6x-0.6=0
-0.3x=15.6
x=-(15.6:0.3)
x=-(156:3)
x=-52