Verified answer

bonsoir

A = 1 - ( 2/3 + 1/4)

A =  12/12 - ( 8/12 + 3 /12)

A =  12/12 - 11 /12

A  = 1 /12

B  = ( 6/2 - 5/2) : ( 5/5 + 1 /5)

B =  1 /2 : 6/5

B =  1/2 * 5/6

B = 5/12

35/8 * 4/5 =  140/40 = 7/ 2

C   = 7/2

3 )  1/12 + 5/12 + 7/2

=  1/12 + 5/12 + 42/12

=  48/12

=  4