Question

genteee por favo precisso disso pra amanhã e precisa dos CÁLCULOS ME AJUDEM!!

Answer 1

a) 5y + y = 12

6y = 12

y=12/6 = 2

x = 5y

x = 5(2) = 10

b) x = 10 + y

2 (10+y) + 3y = 10

20 + 2y + 3y = 10

5y = 10 - 20

5y = -10

y = -2

x - y = 10

x - (-2) = 10

x+2=10

x=8

c) x = 3 - y

12(3-y) - 9y = -20

36-12y-9y=-20

-12y-9y=-20-36

-21y=-56

y= 56/21

56/21 + y = 3

y = 3 - 56/21

y = 21 (3) - 56 / 21

y = 7/21

d) y = 7 - 2x

5x - 2(7-2x) = -5

5x -14 +4x = -5

5x+4x=14-5

9x=9

x=1

2(1) + y = 7

y = 7 - 2

y=5