Question

Resolver as equações
3x-1=4(x-1)
5x-3=4(x+4)
X+x+1+x-1=3
- - - -
5 6 4 10
3x-4=x
------ -
2 7

Answer 1

3x-1=4(x-1)
3x-1=4x-4
3x-4x=1-4
-1x=-3
x=3


5x-3=4(x+4)
5x-3=4x+16
5x-4x=16+3
1x=19
x=19


x+x+1+x-1=3
3x=3+1-1
3x=3
x=3/3 = 1
x=1