Question

equacoes: a) 6x+18=25 b) 5x-7=128 c) 3x+17=-28 d) 2x-54=-82

Answer 1

resolvendo----
a)
6x+18=25
6x=25-18
6x= 7
x= 6/6
x=1

b)
5x-7=128
5x=128+7
5x=135
x=135/5
x=27

c)
3x+17=-28
3x=-28-17
3x= -45
x=45/3
x= -15

d)2x-54=-82
2x=-82+54
2x= -30
x= -30/2
x= -15

Answer 2

a)
6x + 18 = 25
6x = 25 - 18
6x = 7
x = 7/6

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b)
5x - 7 = 128
5x = 128 + 7
5x = 135
x = 135/5
x = 27

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
c)
3x+17=- 28
3x = - 28 - 17
3x = - 45
x = - 45/3
x = - 15

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
d)
2x - 54 = - 82
2x = - 82 + 54
2x = - 28
x = - 28/2
x = - 14