Answer:
The answer to your question is x = 243/47 y = 749 / 329
Step-by-step explanation:
Data
Equations 3x - 24 = 7y Equation l
4y = 21 - 5x Equation ll
-Solve equation l for y
y = (3x - 24) / 7
-Substitute in Equation ll
4 (3x - 24)/7 = 21 - 5x
-Multiply by 7
4(3x - 24) = 7(21 - 5x)
-Simplify
12x - 96 = 147 - 35x
-Solve for x
12x + 35x = 147 + 96
47x = 243
x = 243/47
-Substitute x on equation l
y = (3(243/47) - 24) / 7
y = [729/47 - 24]/7
y = 749 / 329
