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Mathematics
Fernando Holt
24 June, 08:26
Solve $16x+9=9y-2x$ for $y$.
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Allison Moore
24 June, 10:37
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The solution for y is y = 2x + 1
Step-by-step explanation:
* Lets explain how to solve an equation for one of the variables
- We need to solve the equation 16x + 9 = 9y - 2 x for y
- That means we want to find y in terms of x and the numerical term
- the equation has two sides, one side contains x and numerical term
and the other side contains y and x
- We need to separate y in one side, and other term in the other side
* Lets do that
∵ 16x + 9 = 9y - 2x
- Add 2x to both sides to cancel - 2x from the right side
∴ 16x + 2x + 9 = 9y - 2x + 2x
- Add like terms in each side
∴ 18x + 9 = 9y
- Divide each term by the coefficient of y ⇒ (:9)
∴ (18 : 9) x + (9 : 9) = (9 : 9) y
∴ 2x + 1 = y
- Switch the two sides
∴ y = 2x + 1
* The solution for y is y = 2x + 1
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