Solve using elimination method

7x+15y=32

X-3y=20

Question

Mathematics

Marisa Roach

28 October, 18:02

Solve using elimination method

7x+15y=32

X-3y=20

+2

Answers (2)

Know the Answer?

Greta Contreras · Answer 1

{7x+15y=32

{x-3y=20 / * 5

{7x+15y=32

{ 5x-15y=100 (+)

7x+5x+15y-15y=32+100

12x=132 / : 12

x=11

x-3y=20

11-3y=20 / - 11

-3y = 9 / : (-3)

y=-3

The solution: (11; - 3)

Cheese · Answer 2

1. 7x+15y=32

2. x-3y=20/*5

2. 5x-15y=100

1.+2. = >12x=132

x=11

1. 7*11+15y=32

15y = - 45

y = - 3

x=11; y=-3

Solve using elimination method7x+15y=32X-3y=20

Solve using elimination method

7x+15y=32

X-3y=20