题目内容
(1)-40-28-(-19)+(-24)
(2)[5-5×(-13)]÷(-14)
(3)x-(x+1)+5x;
(4)-2(3y+x)-(7x-2y)
(5)[220-(38+16-34)×24]÷5×(-1)
(6)(-
)÷
×3-22+3×(-1)2008.
(2)[5-5×(-13)]÷(-14)
(3)x-(x+1)+5x;
(4)-2(3y+x)-(7x-2y)
(5)[220-(38+16-34)×24]÷5×(-1)
(6)(-
4 |
5 |
9 |
10 |
(1)原式=-40-28+19-24=-92+19=-73;
(2)原式=(5+65)÷(-14)=70÷(-14)=-5;
(3)原式=x-x-1+5x=5x-1;
(4)原式=-6y-2x-7x+2y=-4y-9x;
(5)原式=(220-
)×
×(-1)=-44+
=-43
;
(6)原式=-
×
×3-4+3=-2-4+3=-3.
(2)原式=(5+65)÷(-14)=70÷(-14)=-5;
(3)原式=x-x-1+5x=5x-1;
(4)原式=-6y-2x-7x+2y=-4y-9x;
(5)原式=(220-
5 |
6 |
1 |
5 |
1 |
6 |
5 |
6 |
(6)原式=-
4 |
5 |
10 |
9 |
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