(120+780/130)*84-100 怎样简算?

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(120+780/130)*84-100怎样简算?(120+780/130)*84-100怎样简算?(120+780/130)*84-100怎样简算?(120+780/130)*84-100=(120

(120+780/130)*84-100 怎样简算?
(120+780/130)*84-100 怎样简算?

(120+780/130)*84-100 怎样简算?
(120+780/130)*84-100
=(120+6)*84-100
=(125+1)*84-100
=125x84+84-100
=125x(80+4)-16
=125*80+125*4-16
=10000+500-16
=10484