Question

(-10) - (2) - (+ 4) - (-1) =
(-4) - (+2) - (-1) + (-5) =
(+ 3) - (-2) + (- 9) + (-5) =​

Answer 1

Resposta:

10

4x−1

−2=

5

4

−

4

2−x

20

2(4x−1)−40

=

20

16−5(2−x)

2(4x−1)−40=16−5(2−x)

8x−2−40=16−10+5x

8x−42=6+5x

8x−5x=6+42

3x=48

x=

3

48

x=16