Question

Solve the system of equations 25-x=-4y and 3x-2y=30

Answer 1

the system of equations 25-x=-4y and 3x-2y=30

Explanation:

the system of equations 25-x=-4y and 3x-2y=30

Answer 2

(7, -9/2)

x=7

y=-9/2

Explanation:

1. x=25+4y

2. 3x-2y=30

substitute 1 in 2

3. 75+12y-2y=30

simplify

10y=-45

y=-9/2

substitute y in to the second equation 3x-2y=30

3x+9=30

3x=21

x=7