Question

Simplifique as expressões:
a) x - 5 + 3x
b) 4y + 3y.(35:5) + 6
c)3. (4 + 3b) - 8b
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Answer 1

a) x-5+3x=0

x+3x= 5

4x=5

x=5/4

Forma decimal: 1,25

b) 4y+3y.(35:5)+6=0

4y+3y.6+6=0

4y+18y=6

22y=6

y=6/22

ou y=0,2727...

c)3(4+3b)-8b=0

12+9b-8b=0

9b-8b= 12

x=12