Question

calculeaza numarul necunoscu conform modelelor date a+39+27=293 a-90-75=470 a+47-32=875

Answer 1

a+39+27=293                           
a+66=293
a=293-66
a=227

a-90-75=470
a-165=470
a=470+165
a=635

a+47-32=875
a=875+32-47
a=860

Sper ca te-am ajutat ))

Answer 2

a+39+27=293
a+66=293
a=293-66
a=227
227+39+27=293

a-90-75=470
a=470+90+75
a=635
635-90-75=470


a+47-32=875
a=875-47+32
a=860
860+47-32=875