Question

gasestecifrele a,b,c,d asfel incat a2b7+3c2d= 7321 . Ajutor va rog

Answer 1

4297+3024=7321

a=4
b=9
c=0
d=4

Answer 2

a2b7+3c2d=7321

(a*1000+2*100+b*10+7)+(3*1000+c*100+2*10+d)=7*1000+3*100+2*10+1
=>(a+3000)+(c+200)+(b+20)+(d+7)=7000+300+20+1
=>(7000+300+20+1)-(3000+200+20+7)=4000+0+90+4
=>7321-3227=4094

a=4...(4*1000=4000)
b=9...(9*10=90)
c=0...(0*100=0)
d=4...(4*1=4)

4297+3024=7321