Question

МАТЕМАТИКА 6 КЛАСС РЕШИТЕ НЕРАВЕНСТО

Answer 1

( 4 )

$-7\leq \frac{2x+1}{2}<2|*2\\\\-7 *2\leq \frac{2*(2x+1)}{2}<2*2\\\\-14\leq 2x+2<4\\\\\left \{ {{2x+2\geq -14} \atop {2x+2<4}} \right.\\\\\left \{ {{2x\geq -14-2} \atop {2x<4-2}} \right.\\\\\left \{ {{2x\geq-16} \atop {2x<2}} \right.\\\\\left \{ {{x>-8} \atop {x<1}} \right.\\\\-8\leq x<1$

x ∈ [ -8 ; 1 )