Resolva cada uma dessas equaçoes
a) -x + 3= -2x + 1
b) 0,5x - 3= -3,5 + 1,5x
c) 2a - 3=a + 5
d) 3x - 1= -x + 3
e) -x + 1= 3x - 4
f) 2x - 1= -3x + 10
g) -2x + 3= -1 +x + 2
h) -2x + 7 - 3= x - 1 + 5
i) -x + 1= 2x - 3
ME AJUDEM PRFV <3
Soluções para a tarefa
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a)
- x + 3 = - 2x + 1
- x + 2x = 1 - 3
2x - x = - 2
x = - 2
******************************
b)
0,5x - 3= -3,5 + 1,5x
- 3 + 3,5 = 1,5x - 0,5x
3,5 - 3 = 1x
0,5 = x
x = 0,5
*****************************
c)
2a - 3 = a + 5
2a - a = 5 + 3
a = 8
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
d)
3x - 1= - x + 3
3x + x = 3 + 1
4x = 4
x = 4/4
x = 1
*************************
e)
- x + 1= 3x - 4
1 + 4 = 3x + x
5 = 4x
4x = 5
x = 5/4
**************************
f)
2x - 1= -3x + 10
2x + 3x = 10 + 1
5x = 11
x = 11/5
********************************
g)
- 2x + 3 = - 1 + x + 2
- 2x + 3 = 1 + x
3 - 1 = x + 2x
2 = 3x
3x = 2
x = 2/3
***********************************
h)
- 2x + 7 - 3= x - 1 + 5
- 2x + 4 = x + 4
4 - 4 = x + 2x
0 = 3x
3x = 0
x = 0/3
x = 0
*******************************
i)
- x + 1= 2x - 3
1 + 3 = 2x + x
4 = 3x
3x = 4
x = 4/3
- x + 3 = - 2x + 1
- x + 2x = 1 - 3
2x - x = - 2
x = - 2
******************************
b)
0,5x - 3= -3,5 + 1,5x
- 3 + 3,5 = 1,5x - 0,5x
3,5 - 3 = 1x
0,5 = x
x = 0,5
*****************************
c)
2a - 3 = a + 5
2a - a = 5 + 3
a = 8
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
d)
3x - 1= - x + 3
3x + x = 3 + 1
4x = 4
x = 4/4
x = 1
*************************
e)
- x + 1= 3x - 4
1 + 4 = 3x + x
5 = 4x
4x = 5
x = 5/4
**************************
f)
2x - 1= -3x + 10
2x + 3x = 10 + 1
5x = 11
x = 11/5
********************************
g)
- 2x + 3 = - 1 + x + 2
- 2x + 3 = 1 + x
3 - 1 = x + 2x
2 = 3x
3x = 2
x = 2/3
***********************************
h)
- 2x + 7 - 3= x - 1 + 5
- 2x + 4 = x + 4
4 - 4 = x + 2x
0 = 3x
3x = 0
x = 0/3
x = 0
*******************************
i)
- x + 1= 2x - 3
1 + 3 = 2x + x
4 = 3x
3x = 4
x = 4/3
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