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200-42:6x6x9-6x5:10=

Răspuns :

200 - 42 ÷ 6× 6× 9 - 6 × 5 ÷ 10 =

= 200 - 7 × 6 × 9 - 30 ÷ 10

= 200 - 42 × 9 - 30 ÷ 10

= 200 - 378 - 3 = - 181