题文
计算:
①2
﹣1.75= ;②30
×
= 1
;
③(
+
+
)÷
= ;
④30×29﹣29×28+28×27﹣27×26+…+4×3﹣3×2= .
⑤1÷(1﹣
)×(1+
)÷(1﹣
)×(1+
)÷…÷(1﹣
)×(1+
)= ;
⑥方程:65%(x﹣1)=37%(x+1)+0.1的解是x= .
计算:
①2
﹣1.75= ;②30
×
= 1
;
③(
+
+
)÷
= ;
④30×29﹣29×28+28×27﹣27×26+…+4×3﹣3×2= .
⑤1÷(1﹣
)×(1+
)÷(1﹣
)×(1+
)÷…÷(1﹣
)×(1+
)= ;
⑥方程:65%(x﹣1)=37%(x+1)+0.1的解是x= .
试题篮
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