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GREYUIT [131]
2 years ago
8

Explain answer !! ( WILL GIVE BRAINLEST)

Mathematics
2 answers:
kicyunya [14]2 years ago
6 0

Answer:

25-7

Step-by-step explanation:

"Substitute for": Replace x with ____

Since it is given that x = 25 -y, we can replace the x in 5x + y = 10 with 25 - y by the substitution property of equality.

Oksana_A [137]2 years ago
5 0

Answer:

The expression to substitute for x is: 25-y, as said in the first equation

Step-by-step explanation:

<u>Not sure if you need to solve for the variables, but here:</u>

To find y:

Put 25-y in place of x.

You will get:

5(25-y) + y = 10

Use the Distributive Property and multiply 25 and y by 5:

125 - 5y + y = 10

Combine like terms (the y's):

125 - 4y = 10

Put like terms on the same side (move the 125 to the right side of the equal sign by subtracting 125 from both sides:

-4y = -115

Divide both sides by -4:

<u>y = 28.75 (or 28-3/4)</u>

To find x:

Substitute 28.75 for y in either equation.

<u>First equation: </u>

x= 25 - 28.75

x= -3.75

<u>Second equation:</u>

5x + 28.75 = 10

Subtract 28.75 from both sides:

5x = -18.75

Divide both sides by 5:

x = -3.75

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