Question

Four more than twice a number is seven more than the number. What is the number?

Answer 1

Let the number be X.

4 + 2X = X + 7

Answer 2

Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-1x' to each side of the equation.
4 + 2x + -1x = 7 + x + -1x
Combine like terms: 2x + -1x = 1x
4 + 1x = 7 + x + -1x
Combine like terms: x + -1x = 0
4 + 1x = 7 + 0
4 + 1x = 7
Add '-4' to each side of the equation.
4 + -4 + 1x = 7 + -4
Combine like terms: 4 + -4 = 0
0 + 1x = 7 + -4
1x = 7 + -4
Combine like terms: 7 + -4 = 3
1x = 3
Divide each side by '1'.
x = 3
Simplifying
x = 3