Q7) Simplify :
(i) 2a^2b^2+5ab^2+8a^2b^2-3ab^2
(ii) 4a+3b-2a-b
(iii) 2xy+4yz+5xy+3yz-6xy
(iv) ab+15ab-11ab-2ab
(v) 6a^2-3b^2+2a^2+5b^2-4a^2
(vi) 8abc+2ab-4abc+ab
(vii) 9xyz+15yxz-10zyx-2zxy
(viii) 13pqr+2p+4q-6pqr+5pqr
(ix) 4ab+0-2ba
(x) 6x^2y-2xy^2+5x^2y-xy^2
(xi) 6.4a+5.3b-2.4a-2.2b
(xii) 2.5a+4.6b+1.2a-3.6b
(xiii) 22m-12\frac{1}{2}n-15p+16n
(xiv) 6p+\frac{2}{3}q-1\frac{1}{2}p+\frac{1}{3}q+2q
(xv) 2\frac{2}{3}xy-3\frac{1}{2}xy+3\frac{1}{3}xy-2\frac{1}{2}xy