Answer:
use substitution method
find equation for value of x/y
2x + 2y = 4
2y = 4 - 2x
y = 4 - 2x ----> equation 1
2
so..substitute the
equation 1 to -5x+3y=-18
-5x+3( 4 - 2x ) = -18
2
-5x + 3(2-x) = -18
6-3x = -18+5x
6+18= 5x+3x
24 = 8x
24 = x
8
x= 3. -----> eq.2
sub eq.2 into 1 to find the value of x
y = 4-2(3)
2
y = - 1
x=3 ; y= -1
