1.

Refer to Expression 1 and Expression 2. Expression 1 6 x 7 - 32 x 9 + 43 Expression 2 5 + 4 x 2 + 6 - 2 x 2 - 1 (a) What is the value of Expression 1? (b) Insert parentheses in Expression 2 so that it has a value of 19. Then show why your expression has a value of 19.

Answer:

(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.