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Yea X means another number
What is the number of integral solution to x plus y plus z equals 100?
a negative number plus a negative number is negative. here is a proof.(-x)+(-x)(-1)x+(-1)x-1(x+x)-1(2x)-2xa negative number times a negative number is positive though.
Let x be the number. The expression is x^3+11.
Yes. Just pick any number for x and any number for y and you will see. * * * * * This is the reflexive property of "equality"