Question

Resolva essas tres equações:
A) 4(2-x)=16
B) 2(x-1)=3(2x+3)
C) 4(2x+3)=5(x-2)

Answer 1

A) 8 -4X=16
    -4X = 8
     X = -8/4 
     X = -2

B)2X-2 =6X +9
   -11 = 4X
   X = -11/4

C)8X+12=5X-10 
3X = -22
X = -22/3

Answer 2

Olá,

Vamos lá,

A) 4(2-x)=16
8 - 4x = 16
- 4x = 16 - 8
-4x = 8
4x = -8
x = - 8/4
x = -2


B) 2(x-1)=3(2x+3)
2x - 2 = 6x + 9
2x - 6x = 9 + 2
-4x =11
4x = -11
x = -11/4


C) 4(2x+3)=5(x-2)
8x + 12 = 5x -10
8x - 5x = -10 -12
3x = -22
x = -22/3