Question

Aflati nr necunoscut:

115-[7×5+19+(a+124×53):8]:10=5

9-[36:9-(11+15:a-11)+0×9]=8​

Answer 1

Răspuns:

115-[7×5+19+(a+124×53):8]:10=5|-115

=[7×5+19+(a+124×53):8]:10=110|×10

=7×5+19+(a+124×53):8=1100

=35+19+(a+124×53):8=1100|-35

=19+(a+124×53):8=1065|-19

=(a+124×53):8=1046|×8

=a+124×53=8368

=a+6572=8368

a=8368-6572

a=1796

9-[36:9-(11+15:a-11)+0×9]=8|-9

=36:9-(11+15:a-11)+0×9=1

=4-(11+15:a-11)+0=1|-0

=4-(11+15:a-11)=1|-4

=11+15:a-11=3|+11

=11+15:a=14|-11

=15:a=3

a=15:3

a=5

Super ca te-am ajutat! :)