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cat fac2x+10mai mare decat4×(2x-5)

Răspuns :

2X+10<4*(2X+5)
2X+10<8X+20
2X-8X<20-10
-6X=10
X=-6X/10=-3/5
2x+10>4×(2x-5)
2x+10>4×2x-4×5
2x+10>8x-20
2x-8x>-20-10
-6x>-30
x>-30:(-6)
x>5
x={6,7,8,...}