silly82
20.04.2021 •
Mathematics
Which ordered pair represents a solution? *
A (0,2)
B (1,3)
C (3,1)
D (26)
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Ответ:
Ответ:
S2=2*S1+1
S3=3*S1-1
P=S1+S2+S3
42=S1+2*S1+1+3*S1-1
42=6*S1
S1=42/6
S1=7 ANS. FOR S1.
S2=2*7+1=14+1=15 ANS FOR S2.
S3=3*7-1=21-1=20 ANS. FOR S3.
PROOF:
42=7+15+20
42=42