Answer:
x = 7,
y = 0
Step-by-step explanation:
-4y + 7x = 49
-16y + 9x = 63
multiply the first equation with -4
16y - 28x = -196 now add it to the second equation
-16 y + 9x = 63 (16y will eliminate -16y)
-19x = -133
x = 7
to find y use the value of x in the first or second equation
-4y + 7×7 = 49
y = 0
