Question

If x + y = 11, then (–1)x + (–1)y, ........ .) (where x, y are whole number.)​

Answer 1

HEY MATE I AM HERE WITH YOUR ANSWER

X+Y = 11

X= 11-Y

NOW, -X-Y = -(11 - Y) - Y

                   = -11 +Y-Y

                  = - 11

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