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[450:5:(3×6)+35]×7-140+(540:60+7)×(63:9)=

Răspuns :

[450:5:(3×6)+35]×7-140+(540:60+7)×(63:9)=(450:5:18+35)x7-140+(9+7)x7=(90:18+35)x7-140+16=(5+35)x7-140+16=40x7-140+16=280-140+17=140+17=157
[450:5:(3×6)+35]×7-140+(540:60+7)×(63:9)=
(90:18+35)×7-140+(9+7)×7=
(5+35)×7-140+16×7=
40x7-140+112=
280-140+112=
140+112=252