Question

4) RESOLVA AS QUESTÕES A SEGUIR; A) 3N + 10 = 91 B) X - 13 = 34 C) 2(x + 1) + 3(x - 1) = X-5 D) 3(x - 2) = X + 6X + 1 - - Y​

Answer 1

Resposta:

a)3n+10=91

3n=91-10

3n=81

n = 81/3

b)X-13=34

X=34+13

X=47

c) 2(x+1)+3(x-1)=X-5

2x+2+3x-3=x-5

5x-1=x-5

5x-x=-5+1

4x=-4

x=-4/-4

X=1

d)3(x-2) = x+6x+1

3x-6=7x+1

3x+7x=1+6

10x=7

x=7/10

x=0,7

Explicação passo a passo: