Friday

April 25, 2014

April 25, 2014

Posted by **Anonymous** on Sunday, October 2, 2011 at 6:26pm.

3x + 7x =120

It will help if you explain it too. Thanks!

- PRE-ALGEBRA -
**Ms. Sue**, Sunday, October 2, 2011 at 6:27pm3x + 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 = ?

- PRE-ALGEBRA -
**bobpursley**, Sunday, October 2, 2011 at 6:28pmcombine like terms

10x=120

divide both sides by 10

x= 12

**Related Questions**

Algebra - I got a couple I want to check my work : Both are Solve using the ...

help...solving a polynomial....algebra - solve this please....help me....12x(...

pre-algebra - 7x-12=x+2+2x-3x Solve for x Combine the terms on the right hand ...

Algebra - How do I solve for the roots of this quadratic equation: 3x^2-7x...

algebra - thank everyone that site helped but now i just have to practice. for ...

Pre-algebra - Could someone please help me solve the following problems, and ...

algebra - Solve the equations symbolically. 3x+7/4 + 3x-7/5 =-8/5 6(7x-1)+5=24+...

Algebra - Checking two problems : 1. x^2-7x+12 / x^2-16 = (x-3)(x-4) / (x-4)(x+4...

Algebra 1 - What is an equation of a line perpendicular to the line with ...

algebra - Can you check these problems? 3x+13=96 x=6 -8-7x=-120 x=8