4x= 2-y
x = (2-y)/4
6x - 3y = 30
Substitute (2-y)/4 for x in the last equation and solve for y. Put value into first equation to find x. Check by putting both values into the last equation. Add x and y.
If 6x - 3y= 30 and 4x= 2-y then find x+y.
1 answer
1 answer