Question

-2x+3-7y=0
-15+5x=-10y

Answer 1

x=5

y=-1

Explanation:

-2x+3-7y=0 equation 1

-15+5x=-10y equation 2

using equation 2 we have:

-15+5x=-10y

5x = -10y +15

x = -2y +3 equation 3

using equation 3 in equation 1 we have:

-2(-2y+3)+3-7y=0

4y -6 +3 -7y=0

-3y -3= 0

3y= -3

y= -3/3

y = -1

so we have:

x = -2y +3

x = -2(-1) +3

x = 2+3

x =5