Question

решите уравнение |2x+1|-3=4

Answer 1

Ответ:

$|2x + 1| - 3 = 4 \\ |2x + 1| = 4 + 3 \\ |2x + 1| = 7$

$2x + 1 = 7 \\ 2x = 7 - 1 \\ 2x = 6 \\ x = 6 \div 2 \\ x = 3$

$2x + 1 = - 7 \\ 2x = - 7 - 1 \\ 2x = - 8 \\ x = - 8 \div 2 \\ x = - 4$

$x1 = - 4 \\ x2 = 3$