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Earn +20 ptsQ: What is 28 plus 13?
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13 plus 15?
13 + 15 = 28
What is 3 plus 8 plus 13 plus 18 plus 23 plus 28?
The sum is 93.
What is 13 plus 16 plus 18 plus 20 plus 21 plus 26 plus 27 plus 27 plus 28 plus 36 plus 39 plus 42 plus 43?
13 + 16 + 18 + 20 + 21 + 26 + 27 + 27 + 28 + 36 + 39 + 42 + 43 = 356
4w-28 plus 11w plus 13 equals 180 what is w equal to?
w = 13 add 28 to 180, then subtract 13 from 180 to balance equation. Then 4w + 11 w = 195. Add 4w + 11w =15w, so 15w=180, divide 180 by 15, w = 13 4(13) -28 + 11(13) + 13 = 180
-6z plus 2 equals 3z plus 4z plus 28 How do you prove the answer -2 is correct?
-6z 2 = 3z+ 4z+28 -6z+2 +3z = 3z+ 4z +28 +4z -6z+4z+2 = 3z+ 28 -10z+2 -3z= 28 - 2 -10z + -3z = 26 -13z/13 = 26/-13 z = -2
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