Answer:
(x,y)=(4,6)
Explanation:
3x+4y=36
y=-1/2 x+8
step 1: substitute the value of y

step 2: solve equation for x

3x-2x+32=36
x+32=36
x=36-32
x=4
step 3: substitute the value of x

Step 4: solve equation for y

y=-2+8
y=6
there for the answer is
(x,y)=(4,6)