Question

alguém me responde pfvr?

Answer 1

a) 2x+3x < 40-5
5x < 35
x< 35/5
x < 7

b) 6x-8x>100+30-5
-2x>126
x >126/-2
x> -63

c) 7x-2x <16+9
5x <25
x < 25/5
x <5

d)4x-2x < 7+8-7
2x < 8
x <8/2
x < 4