xxxgoku508 xxxgoku508
  • 23-09-2020
  • Mathematics
contestada

Given: 2x+30= -4(5x - 2); prove x= -1 WHAT ARE THE PROOFS

Given 2x30 45x 2 prove x 1 WHAT ARE THE PROOFS class=

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alina181482
alina181482 alina181482
  • 23-09-2020

Answer:1. 2(-1) +30= -4(5(-1)-2)

             2. -2+30=-4(-5-2)

              3. -2+30= 20+8

              4. 28=28

Step-by-step explanation:

replace all Xs with -1

2(-1)+30= -4(5(-1)-2)

times all the -1

-2+30= 20 +8

i got 20 because 5x-1=-5

-5x-4=20

anyways so both sides equal the same number so x=-1 is right

28=28

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