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Q: When does 1 plus 1 equal 3 and 2 minus 1 equal 2?

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4

if the question u are asking is something like this 1/2 - ( - 1/2 ) then the answer is simple all you have to do is solve the equation like this 1/2 - ( - 1/2 ) = 1/2 + 1/2 = 2/2 = 1 its the - (-1/2) that is important remember the rule minus and minus equal plus plus and plus equal plus minus and plus equal minus remember and i hope it helps :)

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2 minus 2/5 plus 1/2 minus 4 = -1.9

1 minus 2 plus 123 times 4 is equal to 491.

=1

1

I think you mean (3x ± 1)^2 = (3x+1)(3x-1)?

9 + 2 + 30 - 5 + 18 - 19 = -1

Negative plus a negative is a negative. Ex. -1+-1=-2 Negative times a negative is a positive. -2*-2=4 But a negative [minus] plus a positive [plus] can be minus, zero or plus: For example, -3 + 2 = -1 -3 + 3 = 0 -3 + 4 = +1

1 + 6 + 9 - 8 + 4 - 5 + 2 + 3 = -6

7/8 minus 2/4 plus 1/4 is equal to 0.625 or 5/8

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