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.