SOLUTION: Find The Value Of y for the Given Value Of x Using Two Metjods. First substitue The Value Of x Into The Equation Then Solve For y. Second, Solve For y And Then Subtitue The Value O
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Question 485237: Find The Value Of y for the Given Value Of x Using Two Metjods. First substitue The Value Of x Into The Equation Then Solve For y. Second, Solve For y And Then Subtitue The Value Of x Into The Equation.
4x+9y=30; x=3 Answer by richard1234(7193) (Show Source):
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First method:
4(3) + 9y = 30
12 + 9y = 30
9y = 18
y = 2
Second method:
9y = 30 - 4x
y = (30 - 4x)/9
y = (30 - 4(3))/9 = 2
