Respostas
respondido por:
1
a) 2x+5=27
2x=27-5
2x=22
x=22/2
x=11
b) 4x-8=2x+6
4x-2x=6+8
2x=14
x=14/2
x=7
c) 7x+1=6x+6
7x-6x=6-1
x=5
d) 5x-3=2x-9
5x-2x=-9+3
3x=-6
x=-6/3
x=-2
e) 4x-7+x=1
4x+x=1+7
5x=8
x=8/5
f) 3-2x=4x
-2x-4x=-3
-6x=-3.(-1)
6x=3
x=3/6 (:3)
x=1/2
2x=27-5
2x=22
x=22/2
x=11
b) 4x-8=2x+6
4x-2x=6+8
2x=14
x=14/2
x=7
c) 7x+1=6x+6
7x-6x=6-1
x=5
d) 5x-3=2x-9
5x-2x=-9+3
3x=-6
x=-6/3
x=-2
e) 4x-7+x=1
4x+x=1+7
5x=8
x=8/5
f) 3-2x=4x
-2x-4x=-3
-6x=-3.(-1)
6x=3
x=3/6 (:3)
x=1/2
respondido por:
0
2x + 5 = 27 2x = 27 - 5 2x = 22 x= 11
4x - 8 = 2x + 6 4x - 2x = 6 + 8 2x = 14 x = 7
7x + 1 = 6x + 6 7x - 6x = 6 - 1 1x = 5 x = 5
5x - 3 = 2x - 9 5x - 2x = -9 + 3 3x = -6 x = -2
4x - 7 + x = 1 4x + 1x = 1 + 7 5x = 8 x = 8/5
3 - 2x = 4x 3 = 4x + 2x 3 = 6x x= 3/6 x = 1/2
4x - 8 = 2x + 6 4x - 2x = 6 + 8 2x = 14 x = 7
7x + 1 = 6x + 6 7x - 6x = 6 - 1 1x = 5 x = 5
5x - 3 = 2x - 9 5x - 2x = -9 + 3 3x = -6 x = -2
4x - 7 + x = 1 4x + 1x = 1 + 7 5x = 8 x = 8/5
3 - 2x = 4x 3 = 4x + 2x 3 = 6x x= 3/6 x = 1/2
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