Seudónimo Seudónimo

09-02-2017
Mathematics

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What is 2x + 5 = 15 - (-49) x 5

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christinann062 christinann062

09-02-2017

2x + 5 = 15 - (-49) x 5
combine like terms

2x + 5 = 320
subtract 5 from each side

2x = 315
divide by 2 on each side

x = 157.5

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hopewelch97 hopewelch97

09-02-2017

So, you do -49 * 5 first because multiplication is before addition, which is -245.
15 - (-245) turns into addition, so the right side of the equation is 260.

Move the 5 over. 260-5 = 255

2x = 255, so x =255/2 or 127.5

Answer Link

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