Question

Calcule o valor de L:

A)3L-12=2L+15

B)5L+10=3L-20 C)10L-20=50

2)calcule o valor de y:

A)7y-4(2+y)=2(y-2)+12

B)5y-20=3(y-4)-2

Answer 1

Explicação passo-a-passo:

1)-calcule o valor de L:

a)3L-2L=15+12

L=27

b)5L-3L=-20-10

2L=10

L=10/2

L=5

c)10L=50+20

10L=70

L=70/10

L=7

2)-calcule o valor de y:

a)7y-8-4y=2y-4+12

7y-4y-2y=-4+12+8

y=0

b)5y-20=3y-12-2

5y-3y=-12-2+20

2y=6

y=6/2

y=3