11-08-2018
Mathematics

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What is the variable x in 40+10x=5x-30

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chrysanthemum chrysanthemum

11-08-2018

40 + 10x = 5x - 30

To begin isolating x, subtract 40 from both sides.

40 + 10x - 40 = 5x - 30 - 40

10x = 5x - 70

Subtract 5x from both sides.

10x - 5x= 5x - 70 - 5x

5x = -70

Finally, divide both sides by 5.

5x/5 = -70/5

x = -14

Answer:

x = -14

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