Substitution 19793
Calculate in arithmetic sequence a1, d, s7,
if:
a1 + a4 + a6 = 71
a5 - a3 - a2 = 2
Hint: Use the substitution method when solving the system.
Pay due attention to the "minus" signs in the second equation of the system.
if:
a1 + a4 + a6 = 71
a5 - a3 - a2 = 2
Hint: Use the substitution method when solving the system.
Pay due attention to the "minus" signs in the second equation of the system.
Final Answer:
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