Question

Add: x+ y+ xy, x- y+ yz and z+ x +xz
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Answer 1

Answer:

3x +xy+ yz +xz

Step-by-step explanation:

(x +y+ xy ) + ( x-y+yz) + ( z +x +xz) = ( x+x+x) +(y-y) + xy + yz +xz

                                                       = 3x +xy+ yz +xz