Two more than 4 times a number is -18. What is the number?

2 Answers

x = -5

Explanation:

Two more than 4 times a number is -18 is

-18 = 4x + 2

4x + 2 = -18

or

2 + 4x = -18

You subtract both sides by 2 to get

-20 = 4x

or

4x = -20

You then divide both by 4 to get

x = -5

A negative number divided by a positive number equals a negative number.

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Oct 4, 2017

2+4x=-18
therefore x=-5

Explanation:

Let x be the number.

2 more than 4 times a number is the same as saying 2+4x.

You then equate this to -18, as the question says.

Putting the information into an equation, you get:

2+4x=-18

You then solve for x:

2+4x=-18
4x=-20
therefore x=-5