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Andreyy89
3 years ago
7

2y+X-4=0 what is the answer

Mathematics
2 answers:
vodomira [7]3 years ago
7 0
YX=2, I assume you need to get the 'X' and 'Y' alone. Also just for future reference, you're trying to get variables alone and all the numbers on the other side. Lastly, whatever you do to one side you do to the other. Good luck!
melisa1 [442]3 years ago
4 0
X = 4 + -2y  Simplifying<span>2y + x + -4 = 0 Reorder the terms: -4 + x + 2y = 0 Solving -4 + x + 2y = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + x + 4 + 2y = 0 + 4 Reorder the terms: -4 + 4 + x + 2y = 0 + 4 Combine like terms: -4 + 4 = 0 0 + x + 2y = 0 + 4 x + 2y = 0 + 4 Combine like terms: 0 + 4 = 4 x + 2y = 4 Add '-2y' to each side of the equation. x + 2y + -2y = 4 + -2y Combine like terms: 2y + -2y = 0 x + 0 = 4 + -2y x = 4 + -2y Simplifying x = 4 + -2y

</span>
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Answer:  It will take Damon 6 weeks to save the money he needs to buy the snowboard

Step-by-step explanation:

First, let's see what the problem is giving us:

-The variable X will represent the number of weeks it will take Damon to save the money he needs.

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Therefor:

Our equation will be:  $40 + $20X = $160

Step 1

We need to isolate the variable by subtracting in both sides of the equation 40 in order to maintain the equality.

40 - 40 + 20X = 160 - 40

This will let us with 20X = 120

Step 2

We have to isolate the variable again, but this time (because the variable is being multiplied by 20) we have to divide on both sides of the equation.

20X/20 = 120/20

Therefore: X=6

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