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Anna11 [10]
3 years ago
15

Solve the equation 5x + 7y = 35 for y

Mathematics
2 answers:
Stolb23 [73]3 years ago
7 0
Y=(-5/7)x+5

Subtract 5x over to the right side to isolate y. then divide everything by 7. Hope this helps
dalvyx [7]3 years ago
5 0
X and y are variables

remember, you can do anything to an equaiton as long as you do it to both sides

5x+7y=35
add -5x to both sides
-5x+5x+7y=35-5x
0x+7y=35-5x
7y=35-5x
divide both sides by 7
\frac{7y}{7}=\frac{35-5x}{7}
(\frac{7}{7})y=(\frac{35}{7})+(\frac{-5x}{7})
(1)y=(5)-\frac{5x}{7}
y=\frac{-5x}{7}+5
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