Question

resolva as equações abaixo
a)x-3=0
b)x+7=2
c)x-5=2
d)2x+3=5
e)0,3x=1
f)3x=6
g)10x-10=20
h)2(x-5)=7(2+x)
i)2x+7=3x-4
gente e urgente
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Answer 1

a)x-3=0

X=3+0

X=3

b)x+7=2

X=2-7

X= -5

c)x-5=2

X=2+5

X=7

d)2x+3=5

2x=5-3

2x=2

X=2÷2

X=1

e)0,3x=1

X=1+0,3

X=1,3

f)3x=6

X=6÷3

X=2

g)10x-10=20

10x=20+10

X=30÷10

X=3

h)2(x-5)=7(2+x)

2x-10=14+7x

2x-7x=14+10

-5x=24

-5x=24×-1

5x=-24

X= -24÷5

X=-4,8

i)2x+7=3x-4

2x-3x=-7-4

-x=-11×-1

X=11