Question

RESOLVA AS INEQUACOES (pfvr e pra amanha)
a)x+2>25=
b)2x-9<15=
c)x-30>20-20x=
d)2x-2>-2x+3=

Answer 1

a)x+2>25
x>25-2
x>23

b)2x-9<15
2x<15+9
2x<24
x<24/2
x<12

c)x-30>20-20x
x+20x>20+30
21x>50
x>50/21

d)2x-2>-2x+3
2x+2x>3+2
4x>5
x>5/4