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3 years ago

Solve the equation 2x - 18 = -2y + 12 for x if y is 12. Make sure to first solve the equation for x in terms of y.

Mathematics

2 answers:

denis23 [38]3 years ago

6 0

Answer:

x = 3

Step-by-step explanation:

Step 1: Plug in 12 for y

2x - 18 = -2(12) + 12

Step 2: Multiply

2x - 18 = -24 + 12

Step 3: Combine

2x - 18 = -12

Step 4: Add 18 to both sides

2x - 18 + 18 = -12 + 18

2x = 6

Step 5: Divide both sides by 2

2x / 2 = 6 / 2

x = 3

Answer: x = 3

-BARSIC- [3]3 years ago

3 0

Answer:

Step-by-step explanation:

2x - 18 = -2y + 12

If y = 12

Therefore,

2x - 18 = -2 x 12 + 12

2x - 18 = -24 + 12

2x - 18 = -12

Add 18 to both sides

2x - 18 + 18 = -12 + 18

2x = 6

Divide both sides by 3

2x/2 = 6/2

x = 3

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Answer:

complete question:

If the height and base of the parallelogram shown are each decreased by 2 cm, what is the area of the new parallelogram?

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Step-by-step explanation:

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area of parallelogram = B × H

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The new height = 8 - 2 = 6 cm

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