Calcule a raiz ou solucao das seguintes equacoes
d) 0,5x+2,6=5,1
e) 5x-27=-4x
f) 9x+5=4x
g) 60+13x=3x
h) 3+1,6x=0,1x
d) 0,5x+2,6=5,1
e) 5x-27=-4x
f) 9x+5=4x
g) 60+13x=3x
h) 3+1,6x=0,1x
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d)
0,5x+2,6=5,1
0,5x = 5,1 - 2,6
0,5x =2,5
2,5
x =----------
0,5
x = 5
e)
5x-27=-4x
5x = - 4x + 27
5x + 4x = +27
9x = 27
x = 27/9
x =3
f)
9x+5=4x
9x = 4x - 5
9x - 4x = - 5
5x = - 5
x = - 5/5
x = -1
g)
60+13x=3x
13x = 3x - 60
13x - 3x= - 60
10x =- 60
x =-60/10
x = - 6
h)
3+1,6x=0,1x
1,6x = 0,1x - 3
1,6x- 0,1x = - 3
1,5x= - 3
- 3
x = ----------
1,5
x =- 2