y=21+2x
5x+2y=48
Substitute for y in the second equation using the first equation:
5x + 2(21 + 2x) = 48
5x + 42 + 4x = 48
9x + 42 = 48
9x = 6
x = 6/9
x = 2/3
Substitute the value for x back into the first equation to find y:
y = 21 + 2*2/3
\(y=22\frac{1}{3}\)
