Question

5x-13=5y+7x4x+15y= negative 10

Answer 1

Answer:

X=-14.5 Y=3.2

Step-by-step explanation:

5x-13=5y+7x

subtract 7x from both sides

-2x-13=5y

subtract 5y from both sides

-2x-5y-13=0

add 13 to both sides

-2x-5y=13

SYSTEMS OF EQUATIONS NOW

4x+15y=-10

-2x-5y=13

multiply the second equation by 3

4x+15y=-10

-6x-15y=39

add the equations together to get:

-2x=29

divide both by -2

x=-14.5

Substitute x into one equation

4(-14.5)+15y=-10

-58+15y=-10

add 58 to both sides

15y=48

divide both sides by 15

y=3.2

CHECK YOUR WORK

4(-14.5)+15(3.2)=-10

-58+48=-10

-10=-10