Mathematics: How do you solve x + x/7 + (x +x/7 ) = 60?

How do you solve x + x/7 + (x +x/7 ) = 60? - id77602451963, indiaseel5940

Ответ:

beausisugpula

03.01.2022

$x+ \frac{x}{7} +(x+ \frac{x}{7} )=60$

Remove parentheses (a)= a

$x+ \frac{x}{7} +x+ \frac{x}{7}$

Group like terms:

$x+ \frac{x}{7} +x+x$

Add similar elements:

$\frac{x}{7} + \frac{x}{7} =2 \frac{x}{7}$

$= 2 \frac{x}{7} +x+x$

Add similar elements:

x+x = 2x

$2 \frac{x}{7} +2x$

Multiply $2 \frac{x}{7}$

$= \frac{2x}{7} +2x$

$\frac{2x}{7} +2x = 60$

Multiply both sides by 7 :

$\frac{2x}{7} *7+2x*7 = 60*7$

16x = 420