Question

What does x equal in the equation id="TexFormula1" title="\frac{3}{5}x- \frac{1}{4}x=7\\" alt="\frac{3}{5}x- \frac{1}{4}x=7\\" align="absmiddle" class="latex-formula">

Answer 1

Answer:

x=20

Step-by-step explanation:

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Answer 2

Answer:

$x = 20$

Step-by-step explanation:

$\frac{3}{5}x - \frac{1}{4}x = 7$

The LCD is 20, so multiply both sides of the equation by 20.

$20(\frac{3}{5}x - \frac{1}{4}x) = 20 \times 7$

$4 \times 3x - 5 \times x = 140$

$12x - 5x = 140$

$7x = 140$

$x = 20$