1.

If A=5m+11n-15p,B=12m-13n+19p and C=7m-6n+21p , then the value of A+B−C is​

Answer»

Step-by-step EXPLANATION:

= 5m+11n-15p+12m-13n+19p -(7m-6n+21p)

= 5m+11n-15p+12m-13n+19p-7m+6n-21p

= 10m+4n-17p



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