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[(20+3•14)•5-6•5]•2-400

Răspuns :

Sanduurzica
[(20+3*14)*5-6*5]*2-400=
[(20+42)*5-30]*2-400=
[62*5-30]*2-400=
[310-30]*2-400=
280*2-400=
560-400=160
Daiana86754
[(30+3•14)•5-6•5]•2-400=
[(30+42)•5-6•5]•2-400=
(72•5-6•5)•2-400=
(360-30)•2-400=
330•2-400=
660-400=
260