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3x[ 8+2x( 5+n +27:3)] = 168
 
1225: [( 13x p - 30 ) :3-10] = 7

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Răspuns :

3x[ 8+2x( 5xn +27:3)] = 168
3x[ 8+2x( 5xn +9)] = 168
 8+10n +18 = 56
10n = 56-8-18
10n =30
n=3


1225: [( 13x p - 30 ) :3-10] = 7
( 13x p - 30 ) :3-10 =1225:7
( 13x p - 30 ) :3-10 =175
( 13x p - 30 ) :3 =175+10
( 13x p - 30 ) :3 =185
 13x p - 30   =185x3
 13x p   =555+30
 13x p   =585
 p=585:13
 p=45