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- Feb 14, 2012
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Given a system of simultaneous equations below:
$pqrs+pqrt+pqst+prst=-264$
$pqrs+pqrt+prst+qrst=-24$
$pqrs+pqrt+pqst+qrst=24$
$pqrs+pqst+prst+qrst=248$
$pqrt+pqst+prst+qrst=-16$
Evaluate $80t-20s+60r-50q+70p$.
$pqrs+pqrt+pqst+prst=-264$
$pqrs+pqrt+prst+qrst=-24$
$pqrs+pqrt+pqst+qrst=24$
$pqrs+pqst+prst+qrst=248$
$pqrt+pqst+prst+qrst=-16$
Evaluate $80t-20s+60r-50q+70p$.