Question

1-encontre a raiz:

A-)10x-19=21

B-)5x-27= -4x

C-)9x+5=4x

D-)5x+21=10x+19

E-)11x+17=10x+13​

Answer 1

Explicação passo-a-passo:

A)10x-19=21

10x = 21 + 19

10x = 40

x = 40/10

x = 4

B)5x-27= -4x

5x + 4x = 27

9x = 27

x = 27/9

x = 3

C)9x+5=4x

9x - 4x = -5

5x = -5

x = -5/5

x = -1

D)5x+21=10x+19

21 - 19 = 10x - 5x

2 = 5x

x = 2/5

x = 0,4

E)11x+17=10x+13

11x - 10x = 13 - 17

x = -4

Bons estudos!