Question

Quanto é 1x + 2.(x+3)=8

24x + 3.(15-1)=30

2.(x+3)=30

8-2.(x+5)=5

3.(y-1)-4.(y-2)=6

Answer 1

Resposta:

1x + 2.(x+3)=8        X=2/3

24x + 3.(15-1)=30   X=-1/2

2.(x+3)=30            X=12

8-2.(x+5)=5           X=-7/2

3.(y-1)-4.(y-2)=6      Y=-1

Explicação passo-a-passo:

1x + 2.(x+3)=8

x+2x+6=8

3x=8-6

3x=2

x=2/3

24x + 3.(15-1)=30

24x+ 45-3=30

24x+42=30

24x= 30-42

24x=-12

x=-12/24

x=-1/2

2.(x+3)=30

2x+6=30

2x=30-6

2x=24

x=24/2

x=12

8-2.(x+5)=5

8-2x-10=5

-2x-2=5

-2x=7

2x=-7

x=-7/2

3.(y-1)-4.(y-2)=6

3y-3-4y+8=6

-y+5=6

-y=6-5

-y=1

y=-1