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c. 7 + 7:7x7 - (3 x 30 - 3 x 10):10​

Răspuns :

Răspuns:

=7+7:7×7-(90-30):10

=7+7:7×7-30:10

=7+1×7-3

=8×4

=32

Răspuns:

7+7:7x7-(3x30-3x10):10=7+7:7x7-(90-30)

=7+7:7x7-60:10

=7+1x7-6

=7+7-6

=14-6

=8