Question

Solve 4x+y=8 x+y=5 Solving by elimination

Answer 1

Step-by-step explanation:

4x+y=8

x+y=5

5(4x+y)=8

8(x+y)=5

20x+5y=40

8x+8y=40

2x_3y=0

2×_3y

Answer 2

Answer:

y=4,x=1

Step-by-step explanation:

4x+y=8

x+y=5

subtract equation 2 from equation 1

3x + 0=3

3x=3

divide both sides by 3

x=1

substitute for x=1 in equation 2

x+y=5

1+y=5

y=5-1(collecting like terms)

y=4