七年级数学整式的加减法计算题大全 381.docx
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七年级数学整式的加减法计算题大全381
(5x2-3x+4)-4(5x2+2x)
-9(x2-2)-9(x2-9)
-(x2y-2xy-2)-9(x2y+9xy-8)
12
(—x2-15x+16y)-(—x2+11x-16y)
33
11
-—(5k3+5k2+8)-—(7k3-3k2-3k)
42
(9k2+4k)+(2k2-9k-9)
(7a2+a+6b)-(8a2-7a-5b)
9x2-(2x2+5x+9)+(8x-5)
8y2-(7x2+y)-(8x2+5y2)
1
(4x2+2xy+—x)-(7x2+4xy+7x)
3
14
(—xy-2y2-4)+(x2-—xy+y2+8)
43
43
(xy-—y-—)+(xy+x-9)
54
(8y-4x-7z2)-(7y+5x-9z2)
(8m2-7m+2)-(8m+6n+6)
(x2+9x-3)+8(2x2+4x)
-4(x2-7)+5(x2+5)
-(x2y-7xy-3)-7(x2y+6xy-2)
71
(—x2+22x-16y)+(—x2+10x-20y)
88
11
-—(7k3-9k2-7)-—(9k3+8k2+9k)
24
(5k2+k)+(4k2+4k+7)
(6a2-3a-2b)+(5a2+8a-6b)
x2-(4x2+9x-3)+(4x-3)
2y2-(3x2+y)+(2x2+8y2)
2
(9x2-6xy+—x)+(5x2+6xy-3x)
3
66
(—xy-y2+5)+(x2-—xy-y2+9)
55
81
(xy+—y-—)+(xy-x+7)
78
(2y-6x-5z2)+(6y+8x+7z2)
(8m2+2m-2)+(5m-5n-2)
(7x2-9x-5)-8(5x2-6x)
-3(x2+7)-5(x2+3)
-(x2y+3xy+2)+5(x2y+4xy+2)
71
(—x2+24x-14y)-(—x2-19x-27y)
88
11
-—(4k3-6k2+1)+—(8k3+9k2-4k)
22
(6k2-5k)+(8k2-9k+4)
(4a2-4a+7b)-(3a2+6a+4b)
3x2-(8x2-9x-4)-(5x+5)
2y2-(3x2-y)-(x2+3y2)
9
(x2-4xy+—x)-(9x2+xy+9x)
8
66
(—xy-5y2+1)-(x2+—xy+4y2+5)
77
61
(xy+—y-—)-(xy-x+3)
58
(y+9x-6z2)+(4y+5x+2z2)
(m2-8m+9)-(6m-7n+1)
(2x2+3x+3)+4(9x2+6x)
-8(x2+5)+2(x2+9)
-(x2y-7xy+2)+7(x2y+9xy-5)