Question

caucule:
A) 12x-6+2=-4x-x+10
B) 36x=-4
C) x+5=-3x-15
D) 27-8x=-12+4x
​

Answer 1

Resposta:

12x-4=-5×+10

12×+5×=10+4

17×=14

×=14/17

×=-4/36

×=-1/9

×+3×=-15-5

4×=-20

×=-20/4

×=-5

27+12=4×+8×

39=12×

39/12=×

x=13/4

Answer 2

Resposta:

$12x - 6 + 2 = - 4x - x + 10 \\ 12x + 4x + x = 10 - 2 + 6 \\ 17x = 14 \\ x = \frac{14}{17}$

$36x = - 4 \\ x = \frac{ - 4}{36} = - \frac{ 1}{9} .$

$x + 5 = - 3x - 15 \\ x + 3x = - 15 - 5 \\ 4x = - 20 \\ x = \frac{ - 20}{4} = - 5$

$27 - 8x = - 12 + 4x \\ - 12x = - 39 \\ x = \frac{39}{12} = \frac{13}{4} .$