Solve the equation.

3x + 7x =120
It will help if you explain it too. Thanks!

3x + 7x =120

10x = 120

This means that 10 time some number is 120.

Divide both sides of the equation by 10.

x = 120/10

x = ?

combine like terms

10x=120
divide both sides by 10
x= 12

To solve the equation 3x + 7x = 120, we need to combine the like terms on the left side of the equation. Here's how:

1. Combine the coefficients of the like terms: 3x + 7x = (3 + 7)x = 10x.
So, the equation becomes 10x = 120.

2. To isolate x, divide both sides of the equation by the coefficient of x, which is 10:
10x/10 = 120/10.
This simplifies to x = 12.

Therefore, the solution to the equation 3x + 7x = 120 is x = 12.