Question

6xy - (2yx - 4mn) + ( nm - 5xy) - (-2mn + yx)​

Answer 1

Respuesta:

6xy - (2yx - 4mn) + ( nm - 5xy) - (-2mn + yx)​

$=6xy-\left(2yx-4mn\right)+nm-5xy-\left(-2mn+yx\right)\\\\=6xy-\left(2xy-4mn\right)+mn-5xy-\left(-2mn+xy\right)\\\\=6xy-2yx+4mn+nm-5xy-\left(-2mn+yx\right)\\\\=6xy-2yx+4mn+nm-5xy+2mn-yx\\\\=-2xy+7mn$