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(1)$(-2ab+3b)-2(-b)-2ab$; (2)$5(ab-3ab^{2})-2(a^{2}b-7ab)$;
(3)$3(2x^{2}y-xy^{2})-(4xy^{2}+3x^{2}y)$; (4)$-3(2x^{2}-xy)+4(x^{2}+xy-6)$;
(5)$2a^{2}+9b^{2}+(-5a^{2}-4b^{2})$; (6)$a+[2a-2-(4-2a)]$;
(7)$3x^{2}-[7x-(4x-3)-2x^{2}]$; (8)$-(3a^{2}-4ab)+[a^{2}-2(2a+2ab)]$;
(9)$2a^{2}b+2ab^{2}-[2(a^{2}b-1)+2ab^{2}+2]$; (10)$1-3(2ab+a)+[1-2(2a-3ab)]$.
(3)$3(2x^{2}y-xy^{2})-(4xy^{2}+3x^{2}y)$; (4)$-3(2x^{2}-xy)+4(x^{2}+xy-6)$;
(5)$2a^{2}+9b^{2}+(-5a^{2}-4b^{2})$; (6)$a+[2a-2-(4-2a)]$;
(7)$3x^{2}-[7x-(4x-3)-2x^{2}]$; (8)$-(3a^{2}-4ab)+[a^{2}-2(2a+2ab)]$;
(9)$2a^{2}b+2ab^{2}-[2(a^{2}b-1)+2ab^{2}+2]$; (10)$1-3(2ab+a)+[1-2(2a-3ab)]$.
答案：
(1)-4ab+5b
(2)19ab-15ab²-2a²b
(3)3x²y-7xy²
(4)-2x²+7xy-24
(5)-3a²+5b²
(6)5a-6
(7)5x²-3x-3
(8)-2a²-4a
(9)0
(10)2-7a
(1)-4ab+5b
(2)19ab-15ab²-2a²b
(3)3x²y-7xy²
(4)-2x²+7xy-24
(5)-3a²+5b²
(6)5a-6
(7)5x²-3x-3
(8)-2a²-4a
(9)0
(10)2-7a
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