broooooo9153 broooooo9153
  • 23-05-2018
  • Mathematics
contestada

When a number is decreased by 20 of itself the result is 56?

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isaacrhoda1189 isaacrhoda1189
  • 23-05-2018
let the number be x
x-20=56
collect like terms or add 20 to both sides
by collecting like terms
x=56+20
x=76

by adding 20 to both side
x-20+20=56+20
x=76
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