resolva as seguintes equações do primeiro grau com uma incógnita
a) x-25=10
b) 3x=-27
c) x+32=45
d) 6x+14=35
e) 4x+2=38
f) 9x=6x+12
g) 5x-1=3x+11
h) 2x+8=x+13
i) 4.(x-2)-5.(2-3x)=4.(2x-6)
a) x-25=10
b) 3x=-27
c) x+32=45
d) 6x+14=35
e) 4x+2=38
f) 9x=6x+12
g) 5x-1=3x+11
h) 2x+8=x+13
i) 4.(x-2)-5.(2-3x)=4.(2x-6)
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x= 10 - 25
x= -15
b) 3X= -27
X= -27 : 3
X= -9
c) x+32= 45
x= 45 - 32
x= 13
d) 6X + 14= 35
6X= 35 - 14
6X= 21
X= 21 : 6
X= 3,5
e) 4x + 2= 38
4x= 38 - 2
4X= 36
X= 36 : 4
X= 9
f) 9X = 6X +12
9X - 6X= 12
3X= 12
X= 12 : 3
X= 4
g) 5X - 1 = 3X + 11
5X - 3X = 11 + 1
2X = 12
X= 12 : 2
X= 6
h) 2X + 8 = X + 13
2X - X = 13 - 8
X= 5
i) 4. ( X -2) -5 . (2 -3X) = 4. (2X -6)
4X -8 -10 +15X = 8X -24
19X -18 = 8X -24
19X - 8X = -24 + 18
11X= -6
X= -6: 11
X= -11/6