Question

3xy-(5yz-3zx-(2xy-(5yz-3zx) -(xy-yz)
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Answer 1

first we make a equation

solve like expressions

first we solve,

(3xy -2xy -xy)

3xy - 2xy = xy

+xy - xy =0

next,

-5yz -5yz cut negative equation

because - ,- = +

then yz

again

3zx + 3zx = 6zx

answer is yz + 6zx