= ( 7 × 6 × 5 × 4 × 3 × 2 × 1 ) × 5! - 6! + 6!
= ( 42 × 20 × 6 × 1 ) × 5! - 6! + 6!
= ( 840 × 6 ) × 5! - 6! + 6!
= 5.040 × 5! - 6! + 6!
= 5.040 × ( 5 × 4 × 3 × 2 × 1 ) - 6! + 6!
= 5.040 × ( 20 × 6 × 1 ) - 6! + 6!
= 5.040 × ( 20 × 6 ) - 6! + 6!
= 5.040 × 120 - 6! + 6!
= 5.040 × 120 - ( 6 × 5 × 4 × 3 × 2 × 1 ) + 6!
= 5.040 × 120 - ( 30 × 12 × 2 ) + 6!
= 5.040 × 120 - ( 360 × 2 ) + 6!
= 5.040 × 120 - 720 + ( 6 × 5 × 4 × 3 × 2 × 1 )
= 5.040 × 120 - 720 + ( 30 × 12 × 2 )
= 5.040 × 120 - 720 + ( 360 × 2 )
= ( 5.040 × 120 ) - 720 + 720
= 604.800 - 720 + 720
= 604.080 + 720
= 604.800 ☑
7! x 5! - 6! + 6!
= 7! x 5!
= 5040 x 5!
= 5040 x 120
= 604800
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= ( 7 × 6 × 5 × 4 × 3 × 2 × 1 ) × 5! - 6! + 6!
= ( 42 × 20 × 6 × 1 ) × 5! - 6! + 6!
= ( 840 × 6 ) × 5! - 6! + 6!
= 5.040 × 5! - 6! + 6!
= 5.040 × ( 5 × 4 × 3 × 2 × 1 ) - 6! + 6!
= 5.040 × ( 20 × 6 × 1 ) - 6! + 6!
= 5.040 × ( 20 × 6 ) - 6! + 6!
= 5.040 × 120 - 6! + 6!
= 5.040 × 120 - ( 6 × 5 × 4 × 3 × 2 × 1 ) + 6!
= 5.040 × 120 - ( 30 × 12 × 2 ) + 6!
= 5.040 × 120 - ( 360 × 2 ) + 6!
= 5.040 × 120 - 720 + ( 6 × 5 × 4 × 3 × 2 × 1 )
= 5.040 × 120 - 720 + ( 30 × 12 × 2 )
= 5.040 × 120 - 720 + ( 360 × 2 )
= ( 5.040 × 120 ) - 720 + 720
= 604.800 - 720 + 720
= 604.080 + 720
= 604.800 ☑
7! x 5! - 6! + 6!
= 7! x 5!
= 5040 x 5!
= 5040 x 120
= 604800