Question

Como simplificar as seguinte expressões:
A) 4x-2x+2-3x+7+9+3x-2+7x
B) m+1+(2-1) m
C) 4. (7x+3)-x
D) 2n+3n+2
A)+x+x+x

Answer 1

A) 4x-2x+2-3x+7+9+3x-2+7x = 0
4x-2x-3x+3x+7x+2+9-2 = 0
9x+9 = 0
9x = -9
x = -9/9 = -1
B) m+1+(2-1) m = 0
m+1+2m-m = 0
1+2m = 0
2m = -1
m = -1/2 = -0,5
C) 4. (7x+3)-x = 0
28x+12-x = 0
27x+12 = 0
27x = -12
x = -12/27 = -4/9
D) 2n+3n+2
5n+2
5n = -2
n= -2/5 = -0,4
A)+x+x+x
3x = 0
x = 0