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Pls help me with 28 and 25 plsss

Pls help me with 28 and 25 plsss-example-1

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2 votes

Answer:

15

Explanation:

let's begin by find our variables!

in this case June= x, July = y, and August = z

now that we found our variables let make an equation

x + y + z = 40

we know that x (June)= 12 y (July)= 13 so let's plug that, in place of the variables

12 + 13 + z = 40

Combine like terms

25 + z = 40

Subtract 25 out of 25 and out of 40

25 - 25 + z = 40 - 25

z= 15

now let's plug in all our variable values x = 12; y = 13; z = 15

12 + 13 + 15 = 40 ✓

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