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4 years ago

Find the value of 5x-10 given that - 2x +7=3.

Mathematics

1 answer:

inysia [295]4 years ago

8 0

Answer:

Step-by-step explanation:

-2x+7=3

First you want to get the variable alone. To do that you need to subtract 7 from both sides

-2x+7(-7)=3(-7)

-2x=-4

Next you need to divide -2 on both sides to isolate the variable.

-2x/-2=-4/-2

-2/-2 is 0 and -4/-2 is <em>positive </em>2 because a negative divided by a negative is positive.

x=2

Since x=2 you can plug in 2 into 5x-10 to get the final answer.

5(2)-10

10-10

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