Question

x^2-(x+1)(x+2)/5x+1=6

Answer 1

${x}^{2} - (x + 1)(x + 2) \div (5x + 1) = 6 \\ {x}^{2} - {x}^{2} + 2x + x + 3 \div (5x + 1) = 6 \\ 3x + 3 = 6(5x + 1) \\ 3x - 3 = 30x + 6 \\ 30x - 3x = - 6 - 3 \\ 27x = - 9 \\ x = - 9 \div 27 \\ x = - 1 \div 3$
answer is x=-1/3