First, we need to substitute the value of Y from the first equation into the second equation:
Y = c + 3
-4x + 4(c + 3) = 28
Next, distribute the 4:
-4x + 4c + 12 = 28
Subtract 12 from both sides:
-4x + 4c = 16
Divide both sides by 4:
-x + c = 4
Therefore, the simplified system of equations is:
Y = c + 3
-x + c = 4
Y = c + 3
-4x + 4y =28
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