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a) 5x(70:35+2x(36:12+10))

b) 729:3 la a 3 +180:4+(42:3+12):2


Răspuns :

A)5*[2+2*(3+10)]
5*(2+2*13)
5*(2+26)
5*28=140

B)729 / 27 +180/4+(14+12)/2
    27+45+26/2
    72+13=85
a)5x(2+2x(3+10)=
5x(2+2x13)=
5x28=140

b)729:3³+180:4+(14+12):2=
729:3³+180:4+26:2=
729:27+45+13=
27+45+13=85