Equações de 1 grau calcule mentalmente, o valor de x a)x -1 = 8 b) x+0,5 =10 c)0,4x+5=9 d)x-1/2=0,5 e)6x=12 f)12x=6 g)1,1x=5,5 h) x + 3/5 =7/5
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b) x=9,5
c)x=10
d)x=1
e)x=2
f)x=0,5
g)x=5
h)x=4/5
x=8+1 x=10-0,5 0,4x=9-5 x=0,5+1/2 x=12/6 x=6/12
x=9 x=9,5 0,4x=4 x=1,0 x=2 x=0,5
x=4/0,4
x=10
g)1,1x=5,5 h) x+3/5=7/5
x=5,5/1,1 x=7/5-3/5
x=5 x=4/5