Question

2х+4>5х-8
3х+2<х+4


У=х+1+9-х2

Answer 1

1)
2х=2×2=4 4×2=8
5х=5×5=25 25×5=125
8+4>125-8

2)
3х=3×3=9 9×3=27

27+2<3+4