Question

Help please asap thank youu

Answer 1

3)  subtract the second equation from the first...

(x+7y=64)
-(x+3y=28)
_________

4y=36  divide both sides by 4

y=9, which makes x+7y=64 become:

x+63=64

x=1

So the solution to the system of equations is the point (1,9)

4)

Subtract the second from the first:

4x-4y=24
-(x-4y=3)
_______
3x=21 divide both sides by 3

x=7, which makes x-4y=3 become:

7-4y=3

-4y=-4

y=1

So the solution to the system of equation is the point (7,1)