Question

Rezolvati in R ecuatia .....

Answer 1

-1,4(5-x)+2,5(2+x)=-3,6+x
-7+1,4x+5+2,5x=-3,6+x
-2+3,9x=-3,6+x
3,9x-x=-3,6+2
2,9x=-1,6
x=-16/29

Answer 2

$- 1.4(5 - x) + 2.5(2 + x) = - 3.6 + x \\ - 7 + 1.4x + 5 + 2.5x = - 3.6 + x \\ - 2 + 3.9x = - 3.6 + x \\ 3.9x - x = - 3.6 + 2 \\ 2.9x = - 1.6 \\ x = - \frac{1.6}{2.9} \\ x = - \frac{16}{29}$