Question

Resolva as equacoes abaixo:

G)3(5-×)-3(1-2×)=42

H)5(×-3)-4(×+2)=2+3(1-2×)

I)3×-2=4×+9

J)5(2×-4)=7(×+1)-3

ME AJUDEMMMMM,É urgentee​

Answer 1

Resposta:

G) x= 10

H) x=4

I) x= -11

J) x= 8

Explicação passo-a-passo:

G)3(5-×)-3(1-2×)=42

15-3x-3+6x=42

-3x+6x=42+3-15

3x=30

x=30/3

x=10

G)3(5-×)-3(1-2×)=42

5x-15x-4x-8=2+3-6x

5x-4x+6x=15+8+5

7x=28

x=28/7

x=4

I)3×-2=4×+9

3x-4x=9+2

-x=11 ---> multiplica por (-1)

x= -11

J)5(2×-4)=7(×+1)-3

10x-20=7x+7-3

10x-7x=20+7-3

3x=24

x=24/3

x=8