数学简算题能简算的要简算:1/17÷9x8+1/9x9/17

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数学简算题能简算的要简算:1/17÷9x8+1/9x9/17
数学简算题能简算的要简算:1/17÷9x8+1/9x9/17

数学简算题能简算的要简算:1/17÷9x8+1/9x9/17
1/17÷9x8+1/9x9/17
=1/17x8/9+1/9x9/17
=8/17x1/9+1/9x9/17
=1/9x(8/17+9/17)
=1/9

=1/17x8/9+1/9x9/17
=8/(17x9)+9/(17x9)
=(8+9)/(17x9)
=1/9

1/17÷9x8+1/9x9/17
=8/17x1/9+1/9x9/17
=1/9x(8/17+9/17)
=1/9