Answer:
a * b = ab + 1
First solve the ones in the bracket
4 * (( 6 * 8) + ( 3 + 5))
(6 * 8 ) = 6(8) + 1 = 48 + 1 = 49
(3 * 5) = 3(5) + 1 = 15 + 1 = 16
(6*8) + (3*5) = 49 + 16 = 65
So now
4 * 65 = 4(65) + 1 = 260 + 1 = 261
Therefore
4*((6*8)+(3*5)) = 261
Hope this helps.