Question

63-[(-3){-2-5}]÷[3{5+(-2)(-1)}]​

Answer 1

Answer:

Step-by-step explanation:

= 63-[ (-3){-2-8-3} ] / [ 3{5+(-2)(-1)} ]

= 63-[ (-3){-2-8-3} ] / [ 3{5+2} ]

= 63-[ (-3){-2-11} ] / [ 3{7} ]

= 63-[ (-3){-13} ] / [ 3{7} ]

= 63-[ 39 ] / [ 21 ]

= 63 - (39 /21 )

= 63 - (13 / 7)

taking L C M =  7

= ( 7 × 63 - 13 ) / 7

= (441 -13) / 7

= 428 / 7