\(x+ \frac{x}{7} +(x+ \frac{x}{7} )=60\)
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 :
\(\frac{2x}{7} *7+2x*7 = 60*7\)
\(16x = 420\)
\(x = 420 / 16\)
\(x = \frac{105}{4}\)
hope this helps!
