(a) 763
(b) (5+4)×2+6[+](-2×2-1)
putting 5+4 in parenthesis gives us a 9 then multiplying the answer by the next figure which is (×2) which gives 18 then add the number 18 to (+6) which gives 24 and pause there solve the other side of the equation having +(-2×2-1) which all together gives us (-5) . The reason for the + in front of [+(-2×2-1)] is because there is am invisible addition sign (+) that joins +6 and (-2×2-1) together if I was to put a subtraction sign (-) then the answer of the equation and the equation itself would change.
