Question

1) Resolva as equações:b) 5X – 3= 4X + 7
c) 5(X + 3) = 4 X + 20
d) 6X – 2= 4X + 6

Answer 1

Resposta:

b) x=10

c) x=5

d) x=4

Explicação passo-a-passo:

b) 5x-3=4x+7

5x-4x=7+3

x=10

c) 5(x+3)=4x+20

5x+15=4x+20

5x-4x=20-15

x=5

d) 6x-2=4x+6

6x-4x=6+2

2x=8

x=8÷2

x=4