Thursday

April 17, 2014

April 17, 2014

Posted by **bernadette** on Thursday, March 1, 2012 at 5:42pm.

- algebra -
**MathGuru**, Friday, March 2, 2012 at 5:01pmIf you are expected to solve for x, first multiply 0.7x * 4.

2.8x = 0.8x - 7

Subtract 0.8x from both sides of the equation to get x on one side. Whatever operation you do to one side of an equation you must do to the other side as well.

2.8x - 0.8x = 0.8x - 0.8x - 7

2x = -7

Now divide both sides by 2 to get x by itself.

2x/2 = -7/2

x = -7/2 = -3.5 (decimal form)

You can check this answer with the original equation. It always helps to check your work!

**Related Questions**

Algebra II - Assume that no denomenator equals 0. (7x^2+3x-9)-(-x^2+8x-3) = 7x^2...

algebra - collect like terms and then arrange in descending order. 8x^5 - 7x^9-...

Math - Solve each equation by completing the square. -36x=8x^2+28 -8x^2-3x=-5 5x...

Math - Solve each equation by completing the square. -36x=8x^2+28 -8x^2-3x=-5 ...

Algebra HELP! - solve 7x+5(-3x-4)=-21-7x 7x+(-15x-20=-7x-21 -8x-20=-7x-21 7 7 -...

math algebra 2 - polynomial complete the table for -7x^4+8x^3-3x^2+5x-9 not sure...

Algebra II - Give the equations of any horizontal asymptotes for the graphs of ...

ALGEBRA - Post your 50-word response to the following: Explain why the equation...

algebra II - I would appreciate anyone's help in solving this problem.(1/4x^4+6...

algebra - (1.6x^3+4.7x^2-3.8x)-(-4.3x^3-4.4x^2+55) Is this correct? 5.9x^3+9.1x^...