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What is the value of x in the equation 7x + 2y = 48 , when y = 3?
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5 votes
What is the value of x in the equation 7x + 2y = 48 , when y = 3?

User Jiayu Zhang
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2 Answers

5 votes
For
7x + 2y = 48
we're given y = 3, so substitute into the equation

7x+2(3) = 48
now multiply 2 and 3
7x+6=48
subtract 6 on both sides
7x=42
divide 7 on both sides
x=6
User Sampathsris
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8.0k points
2 votes
7x+2y=48
7x+2(3)=48
7x+6=48
Subtract 6 on both sides.
7x=42
divide 7 on both sides
x=6
User Epocolis
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8.4k points
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