va rog ajutatima va rog frumos mult mult mult mult mult mult mult

a)126×9-87×4=
1134-348=
786
b)500-2×100+3×(87+13)=
500-2×100+3×100=
500-200+300=
300+300=
600
c)18+8×(100-15×6)=
18+8×(100-90)=
18+8×10=
18+80=
98
d)(15+15)×(15-15)+15×15=
30×0+225=
0+225=
225