Question

If the value of a real number x satisfies -2x + 5= -1, then what is the value of 5x

Answer 1

-2x + 5 = -1

subtract 5 from both sides: -2x = -6

divide each side by -2: x = 3

plug in 3: 5(3)

multiply: 15

the value of 5x is 15.

Answer 2

First, solve for x.

-2x + 5 = -1

Isolate the x. Note the equal sign. What you do to one side, you do to the other. Do the opposite of PEMDAS.

First, subtract 5 from both sides

-2x + 5 (-5) = -1 (-5)

-2x = -6

Next, divide -2 from both sides

-2x/-2 = -6/-2

x = -6/-2

x = 3

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Plug in 3 for x

5x = 5(3) = 5 x 3 = 15

15 is your answer

hope this helps