What is the value of x in the equation 7x + 2y = 48 , when y = 3?
2 answers:
7x + 2y = 48
7x + (2x3) =48
7x + 6 = 48
7x = 48 - 6
7x = 42
--> x = 6
Plug in 3 for y.
7x+2(3)=48
Multiply
7x+6=48
Subtract 6
7x=42
Divide by 7
x=6
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