63 = 189
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Where x is equal to the lowest number: x + x+1 + x+2 = 63 3x + 3 = 63 3x = 63 - 3 3x = 60 x = 20 Therefore the answer is: 20, 21 & 22.
Let x=first number y=x+1 is the second z=z+2 is the third x+y+z=63 x+x+1+x+2=63 3x+3=63 3x=63-3 3x=60 x=20 y=21 z=22
3 / 9x+63 / 3(3x+2)1 / 3x+2
9x-3y=63 7x-3y=45 -3y=63-9x -y=21-3x y=-21+3x 7x-3(-21+3x)=45 7x+63+9x=45 7x+9x=45-63 16x=-18 x=-1.125 y=-21+3(-1.125) y=-24.375 (-1.125,-24.375)
We have 3x+9y=36, or equivalently 12x+36y=144. We also have 12x+4y=18, so subtracting these we have 32y=126 or y=63/16. Substituting this into our original equation leaves 3x=36-9*63/16 or x = 12-3*63/16 = 3/16. So: x=3/16, y=63/16