计算(了)了800-了3t0÷了8×了(五)(了-了%×70)÷五7(3)了9了3÷7t-了了3×t7(0)8了3÷7+了7×了了3(t)79×9+79(了)五-了了3÷9五了-五3.-数学
题文
计算 (了)了800-了3t0÷了8×了 (五)(了-了%×70)÷
(3)
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(了)五-
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答案
(1)1800-1a20÷18×6, =1800-72×6, =1800-人20, =1a20; (2)(1-1%×70)÷
=(1-70%)÷
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