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(h:5-5)x9+186:6=400:10

Răspuns :

(h:5-5) x 9+31=40
(h:5-5) x 9=40-31
(h:5-5) x 9=9
h:5-5=9:9
h:5-5=1
h:5=5+1
h:5=6
h=5 x 6
h=30


(h:5-5)×9+186:6=40
(h:5-5)×9+31=40
(h:5-5)×9=40-31
(h:5-5)×9=9÷9
h:5=1+5
h=6×5
h=30