题目内容
计算:
(1)-14+〔1-(1-0.5×2)〕÷|2-(-3)2|;
(2)(-1)10×2+(-2)3÷4+(-22);
(3)化简-(a-b)-3(b-2a);
(4)化简(
x-4y)-6(
x-
y).
(1)-14+〔1-(1-0.5×2)〕÷|2-(-3)2|;
(2)(-1)10×2+(-2)3÷4+(-22);
(3)化简-(a-b)-3(b-2a);
(4)化简(
1 |
2 |
1 |
4 |
1 |
2 |
(1)原式=-1+(1-1+1)÷7=-1+
=-
;
(2)原式=1×2-8÷4-4=2-2-4=-4;
(3)原式=-a+b-3b+6a=5a-2b;
(4)原式=
x-4y-
x+3y=-x-y.
1 |
7 |
6 |
7 |
(2)原式=1×2-8÷4-4=2-2-4=-4;
(3)原式=-a+b-3b+6a=5a-2b;
(4)原式=
1 |
2 |
3 |
2 |
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