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Earn +20 ptsQ: 7 plus f - 21 equals -20?
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What mistake was made in this equation 3x plus 7 equals -4x plus 28 -x plus 7 equals 28 -x equals 21 x equals -21?
3x + 7 = -4x + 28 implies 7x + 7 = 28
What is 5 plus 2 plus 3 plus 7 plus 21 divided by 7?
5 + 2 + 3 + 7 + (21/7) = 20
What is 13-7 equals?
20
4 plus 8 plus 7 plus 1 equals?
20
3 x 7 plus y equals 21?
3 x 7 + 0 = 21
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