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Mathematics
Jada Baird
26 June, 19:12
Solve 20x + 5y = 15 for y.
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Gabriella Page
26 June, 20:14
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20x + 5y = 15
Move 20x to the other side. Sign changes from + 20x to - 20x
20x-20x+5y=-20x+15
5y=-20x+15
Divide both sides by 5
5y/5=y (Cross out 5 and 5, divide by 5, 1*1*y=y)
-20/5=-4x
15/5=3
y=-4x+3 or y=3-4x
Answer: y=-4x+3 or y=3-4x
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