Question

suma a patru nr. a,b,c,d= 994
a=b×3
c:b=4 rest 65
d+a = 439
afla valoarea a,b,c,d
ungent! primul ia coronita daca e corec...

Answer 1

a+b+c+d=994
a=3b
c:b=4r65=>c=4b+65
d+a=439=>d+3b=439=>d=439-3b
3b+b+4b+65+439-3b=994
5b=994-504
b=490:5
b=98
a=3*98=294
c=4*98+65=457
d=439-3*98=145

Answer 2

a=3 segmente 
b=1segmente                               Totul este egal cu 994
c=4segmente +65
d=?
a+d =439
1 Egalam segmentele . 994-65=929-439=490
2 Aflam B.490 ÷5= 98 B
3Aflam A 98×3=294A
4 Aflam C 98×4 +65=457
5 Aflam D 439-294=145
V. 98+294+457+145=994