yamely yamely
  • 25-02-2019
  • Mathematics
contestada

Solve and check equation 20 = 2r - 3r + 10

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awo
awo awo
  • 25-02-2019

2r-3r+10=20

Move all terms to the left:

2r-3r+10-(20)=0

add all the numbers together, and all the variables

-1r-10=0

move all terms containing r to the left, all other terms to the right

-r=10

r=10/-1

r=-10

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