Question

The sum of four and seven times a number is -31. What is the number?

Answer 1

The number is -1.107142857142857

Explanation:

I just used a calculator

Answer 2

The number is -5

Explanation:

Let x be the number

1. Write it out as an algebraic expression: 7x + 4 = -31
2. Subtract 4 from each side, so it now looks like this: 7x = -35
3. Divide each side by 7 to cancel out the 7 next to x. It should now look like this: x = -5

I hope this helps!