Question

RESOLVA AS EQUAÇÕES A SEGUIR
1) 3x + 2 = 11
2) 2 (2a - 1) = 6
3) 5x - 3 = 4x
4) 9 - 2y = 5y + 1
5) 10 - 2t = 12
6) 3 (y + 2) = 2 y​

Answer 1

Resposta:

1)x=3

2)a=2

3)x=3

4)y=8/7

5)t=-1

6)y=-6

Explicação passo-a-passo:

1) 3x + 2 = 11

3x=11-2

3x=9

x=9/3

x=3

2) 2 (2a - 1) = 6

4a-2=6

4a=6+2

a=8/4

a=2

3) 5x - 3 = 4x

5x=+3+4x

5x-4x=3

x=3

4) 9 - 2y = 5y + 1

-2y-5y=+1-9

-7y=-8

y=-8/-7 x(-1)

y=8/7

5) 10 - 2t = 12

-2t=12-10

t=2/-2

t=-1

6) 3 (y + 2) = 2 y​

3y+6=2y

3y-2y=-6

y=-6