Question

solve for x
2x/7 + x/4 = 3

Answer 1

\[Ax/B + Cx/D = (ADx + BCx)/BD = x(AD + BC)/BD\]

Answer 2

boooooo! bad answer! solve 4 x!!!!!

Answer 3

2x/7 + x/4 = 3
2x/7 * 4/4 + x/4 * 7/7 = 3
* get common denominators then proceed :)

Answer 4

help any?

Answer 5

\[x=3*BD/(AD+BC)\]
There, x is solved for.

Answer 6

2x/7 + x/4 = 3 | Original equation
8x/28 + 7x/28 = 84/28 | Make common denominators of 2x/7, x/4 and 3
15x/28 = 84/28 | Add 8x/28 and 7x/28 together
x = 84/28*28/15 | Divide by 15/28 on both sides (multiply by reciprocal)
x = 84/15 | Almost there
x = 28/ 5 | Simplify the fraction by dividing 3 on both numerator and denominator

And that's it! :)