Question

Решите систему неравенств:
2(х-1)-3<5(2x-1)-7x
3(х+1)-2≤6(1-x)+7

Answer 1

{2(х-1)-3<5(2x-1)-7x⇒2x-2-3-10x+5+7x<0⇒-x<0⇒x>0
{3(х+1)-2≤6(1-x)+7 ⇒3x+3-2-6+6x-7≤0⇒9x≤6⇒x≤2/3
x∈(0;2/3]