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evaluate these expressions when a=6 and c=10

a+c-5  c-a=2  2c + a-6
Evaluate these expressions when a=6 and when c=10?
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2 Answers

Are you sure you copied down the problem correctly?
 
It is simple substitution to calculate:  a+c - 5  and 2c + a - 6 .  However, c-a =2  is not true if a = 6 and c = 10.
 Just need to plug in the given values to evaluate each expression
 
 a + c - 5 = 6 + 10 -5 = 11