单选题If 3d-2q=17 and 2q+2d=-32, what is the value of q?A9B6C0D-3E-13
单选题
If 3d-2q=17 and 2q+2d=-32, what is the value of q?
A
9
B
6
C
0
D
-3
E
-13
参考解析
解析:
将题干给出两等式相加可得5d=-15,d =-3。因为3d-2q=17,将d=-3代入到这个等式中,所以q=-13。
将题干给出两等式相加可得5d=-15,d =-3。因为3d-2q=17,将d=-3代入到这个等式中,所以q=-13。
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