Question

Determinati solutiile din multimea Z ale inecuatiilor:
a). 8(1-x) +7x - 10 < 2( 7 - x)
b). 2(x + 5) + 15 - 9 >6(2x + 1)

Answer 1

a) 8-8x+7x-10 <14-2x
-x-2 <14-2x
x <16 x={....,-1,0,1,2,....,15}
b) 2x+10+15-9>12x+6
2x+16>12x+6
10>10x
1>x
x <1
x={-7,-6,-5...-1,0}