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七年级上第三章整式的加减去括号,添括号同步精讲精练(含答案)
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这是一份七年级上第三章整式的加减去括号,添括号同步精讲精练(含答案),共8页。
答案题型探究1-5 . DCBDA 6-10 . BDDDA 11 . C12 . -2xy+ 13 . - + - 14 . -8y+4 15 . 3- (2a - 4b+) 16 . (1) (2) (3) 3 (4) 917 . (1) x+17 (2) 18 . (1) -5b (2) -ab+l 19 . 8a -32 20 . - ( - 2b+2a) + ( - )21 . (1) y+ ( - 4x ) +2 - xy - l (2) y - 4x(-2 +xy) - l22 . (1) 50 5050 (2) 100a+4950b课后作业1-5 . BBDBC 6 . 2x - xy+ 7 . a- (3b-c+2d)8 . 4n - 8m+4 9 . (1) - 4a+3.5b (2) - 5+5+1210 . 101a+5050m
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