Question

Ecuaciones:
21÷3+2×(x+1)= -3x-1

Answer 1

$21 \div 3 + 2(x + 1) = - 3x - 1$

$7 + 2x + 2 = - 3x - 1$

$2x + 5 = - 3x - 1$

$2x + 5 + 3x = - 3x - 1 + 3x$

$5x + 5 + 1= - 1 + 1$

$5x + 6 = 0$

$5x + 6 - 6 = - 6$

$5x = - 6$

$\frac{5x}{5} = \frac{ - 6}{5}$