24 is divided into two parts such that 7 times the first part added to 5 times the second part gives 146. the first part is
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let the two parts be a and b
a+b=24
and
7a+5b = 146
substitute a = 24-b in second equation and solve for b
a+b=24
and
7a+5b = 146
substitute a = 24-b in second equation and solve for b
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