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1 vote
1) 15 = 2W - 5
2) 24 = 2x - 9

1 Answer

3 votes

9514 1404 393

Answer:

1) W = 10

2) x = 33/2

Explanation:

These are 2-step linear equations. Step 1: Add the opposite of the constant on the right. Step 2: Divide by the coefficient of the variable.

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1) 15 = 2W -5

20 = 2W . . . . . add +5

10 = W . . . . . . . divide by 2

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2) 24 = 2x -9

33 = 2x . . . . . add +9

33/2 = x . . . . divide by 2

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As always, whatever you do to one side of the equation must also be done to the other side. That is, the same number is added to both sides; both sides are divided by the same number.

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