3(х - у) - х + у = 3(х - у) - (х - у) = (х - у)(3 - 1)
Ответ:
3(x-y) +(-x) +y
3(2x-2y)
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3(х - у) - х + у = 3(х - у) - (х - у) = (х - у)(3 - 1)
Ответ:
3(x-y) +(-x) +y
3(2x-2y)