Question

1)3×+5=8
2)10×-19=21
3)2×-7=-10
4)3+×=0
5)23×+2=2​

Answer 1

Resposta:

1) x = 1

2) x = 4

3) x = - 3 / 2

4) x = - 3

5) 23x = 0

Explicação passo-a-passo:

1)3x+5=8

3x = 8 - 5

3x = - 3

x = - 3 / 3

x = 1

2)10x-19=21

10x = 21 + 19

10x = 40

x = 40 / 10

x = 4

3)2x-7=-10

2x = - 10 + 7

2x = - 3

x = - 3 / 2 ou x = - 1,5

4)3+x=0

x = 0 - 3

x = - 3

5)23x+2=2

23x = 2 - 2

23x = 0