3) Resolva ( qual o valor de x)
d) 5x
------ = 4
6
e) 3( x + 1 ) = 24
f) x - 8 = -2
g) 3x - 8 = x + 4
h) 2x + 3 = x + 8
i) 2 ( x - 1 ) = 10
Soluções para a tarefa
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d)5x/6=4
mmc=6
5x=24
x=24/5
x=4,8
e)3(x+1)=24
3x+3=24
3x=24-3
3x=21
x=21/3
x=7
f)X-8=-2
x=-2+8
x=6
g)3x-8=×+4
3×-×=4+8
2×=12
x=12/2
x=6
h)2×+3=×+8
2×-×=8-3
×=5
i)2(×-1)=10
2×-2=10
2×=10+2
2×=12
X=12/2
x=6
mmc=6
5x=24
x=24/5
x=4,8
e)3(x+1)=24
3x+3=24
3x=24-3
3x=21
x=21/3
x=7
f)X-8=-2
x=-2+8
x=6
g)3x-8=×+4
3×-×=4+8
2×=12
x=12/2
x=6
h)2×+3=×+8
2×-×=8-3
×=5
i)2(×-1)=10
2×-2=10
2×=10+2
2×=12
X=12/2
x=6
jéssiCHT:
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