Question

1) Solve this system of linear equations by elimination.

2x+4y=8
3x=12+4y


*x=4,y=0
*x=3,y=1
*x=3,y=0
*x=4,y=1

please answer step by step

Answer 1

Explanation:

2x+4y=8

3x-4y=12

2x+4y+3x-4y=8+12

cancel +4y and -4y

therefore 2x+3x=20

5x=20

x=20/5

x=4

Sibstituting x=4 in 2x+4y=8

2x+4y=8

2*4+4y=8

8+4y=8

4y=8-8

y=0/4

y=0

x=4

y=0