djbossbmp19 djbossbmp19
  • 19-09-2017
  • Mathematics
contestada

20-(3x-9)-2=-(-11x+1)

Respuesta :

tropicaia
tropicaia tropicaia
  • 19-09-2017
Answer: x = 2

Explanation
20 - (3x - 9) - 2 = -(-11x + 1)
20 - (3x - 9) - 2 = 11x - 1
20 - 3x + 9 - 2 = 11x - 1
20 - 2 - 3x + 9 = 11x - 1
18 - 3x + 9 = 11x - 1
+ 1                      + 1
19 - 3x + 9 = 11x 
19 + 9 - 3x = 11x 
28 - 3x = 11x 
     + 3x   + 3x
28 = 14x 
÷ 14  ÷14
2 = x 


Check:
20 - (3(2) - 9) - 2 = -(-11(2) + 1)
20 - (6 - 9) - 2 = -(-22 + 1)
20 - (-3) - 2 = -(-21)
20 + 3 - 2 = 21
23 - 2 = 21
21 = 21  yes
Answer Link

Otras preguntas

ANSWER QUICK PLEASE!!!! 25 POINTSAcrylonitrile and ethyl acetate have the same boiling point: 77.2ºC. In one to two sentences, explain what outcome you would ex
I got he first day and can’t remember how to do this??
explain how fixation happens​
Find the equation (in terms of x) of the line through the points (-2,-3) and (4,-1)
This probability distribution shows the typical grade distribution for a Geometry course with 35 students. Find the probability that a student earns a grade of
what is an homeostasis?
what are the effects of looting in a community​
What is the y-intercept
Which whole number property is represented? (8 × 2) × 6 = 8 × (2 × 6)
What is the inverse of f(x) = 2x2 –4?