Question

resuelve:
a) x - 7= 6-(x-3)
b)7x -(4+2x)=1+(x-2)
c)2(3x-1)-5x=5-(3x+11)

Answer 1

x - 7= 6-(x-3)
x-7 = 6 - x + 3
x+x-7= 9
2x = 9+7
2x = 16
x = 16/2
x = 8

7x -(4+2x)=1+(x-2)
7x-4-2x = 1+x-2
5x-4 = x-1
5x-x = 4-1
4x = 3
x = 3/4 


2(3x-1)-5x = 5-(3x+11)
6x-2 - 5x = 5 - 3x-11
x - 2 = -6 - 3x
x+3x = 2-6
4x = -4
x = -4/4
x = -1