Question

7×(x-5)=4×(x+7)

5×(2×-4)=4×(2×+6)

3×(×+2)=2×(3-2×)

8.(×-1)=6.(×-1)

8×-6=4×-12

24-8×=5+5

6×-12=5×-20

10×-25=12×24

ajuda pfvvv ​

Answer 1

Resposta:

7×(x-5) = 4×(X+7)

7X - 35 = 4X + 28

7X -4X  = 28 + 35

3x = 63

x = 21

5×(2×-4)=4×(2×+6)

-10 = 2x + 6

-10 -6 = 2x

-16 = 2x

-8 = x

3×(×+2)=2×(3-2×)

3x + 6 = 6 - 4x

3x + 4x = 6 - 6

5x = 0

8.(×-1)=6.(×-1)

8x - 8 = 6x - 6

8x - 6x = - 6 + 8

2x = 2

x = 1

8×-6=4×-12

8x - 4x = -12 + 6

4x = -6

x = 1,5