Question

Determine o valor de x na equação: 5x+1+5x+5x-1 = 775

Answer 1

$5x+1+5x+5x-1=775\\(5x+5x+5x)+(1-1)=775\\15x=775\\x=775/15\\x=155/3\\\\\boxed{\boxed{x=\dfrac{155}{3}}}$

Answer 2

$5x+1+5x+5x-1 = 775 \\ \\ 5x+5x+5x=775-1+1 \\ \\ 15x=775 \\ \\ x=\frac{775}{15} =\boxed{ \frac{155}{3} }$