9998加4449减5432等于?
9998加4449减5432等于?
[ ]乘[ ]减[ ]等于96除以[ ]加[ ]等于[ ]
b加a加b加a加b加a加b等于48,b减a等于5,b等于(),a等于().
a52b减b25a等于8cdc (a加c加d)乘b等于?aaaa加aaaa等于caaab a加b加c等于?
A加B等于16,A加C等于36,C减B等于几?
化简 (x减y)(x加y)加(x减y)加(x加y)等于
(x减1)(x加2)(x加3)(x加6)加20等于0
1加3加5加5加8除15减13等于多少
9加9减1加9等于?
3x加18减107等于x加107.
3999加(3999加1)减4分之2等于
12.75减(5.75加6.17)等于?