Respuesta :
Answer:
3
10
I'd.k the last one
Step-by-step explanation:
I'm just using characters bc it says I need at least 20
Answer:
a) x = 3
b) 4x
c ) 9x - x
Step-by-step explanation:
a)2x + 4(x -1) = 2 + 4x
2x + 4x - 4 = 2 + 4x
2x[ + 4x [- 4 = 2 [+ 4x
2x + 4x - 4x = 2+4
2x = 6
(Simply both sides by 2)
X = 3
b)25 - x = 15 - (3x + 10)
25 - x = 15 - 3x + 10
25[ - x = [15[ - 3x [+ 10
25 - 15 - 10 = 3x + x
0 = 4x
4x
c)4x = 2x + 2x + 5 (x - x)
4x = 2x + 2x + 5x - 5x
[+4x =[ 2x[ + 2x[ + 5x[ - 5x
2x+ 2x + 5x -5x - 4x
(2x+ 2x + 5x) (-5x - 4x)
9x - x