Question

Calculo de equação responder apenas as letras A,B,C em anexo

Answer 1

a
5x/2 - 1/4 = 8/1
mmc = 4
10x - 1 = 32
10x = 32 + 1
10x = 33
x = 33/10 = 3,3 ***

b
( x - 1)/5 - x/1 = ( 5 - 2x)/3
mmc = 15
3( x - 1) - 15x = 5( 5 - 2x)
3x - 3 - 15x = 25 - 10x
-2x - 3 =  25 - 10x
-2x + 10x = 25 + 3
8x = 28
x = 28/8 =7/2 *****
c
( 4x + 1)/3 + 2( x + 1)/3 = 5( 3x + 2)/4
( 4x + 1)/3 + ( 2x + 2)/3 = ( 15x + 10)/4
mmc = 12
4( 4x + 1) + 4( 2x + 2) = 3( 15x + 10)
16x + 4 + 8x + 8 = 45x + 30
24x + 12 = 45x + 30
24x - 45x = 30 - 12
- 21x = 18
21x = - 18
x = -18/21 =- 6/7 ***