Question

Rezolvati ecuatia in R:
a)2x+1/3-x-2/5=7x+5/15

Answer 1

Sper ca te-am ajutat!

Answer 2

$\displaystyle 2x+ \frac{1}{3} -x- \frac{2}{5} =7x+ \frac{5}{15} \\ 2x \cdot 15+1 \cdot 5-x\cdot 15-2 \cdot 3=7x \cdot 15+5 \\ 30x+5-15x-6=105x+5 \\ 30x-15x-105x=5-5+6 \\ -90x=6 \Rightarrow x=- \frac{6}{90} \Rightarrow x=- \frac{1}{15}$