1. 7 x 2 - (9 + 2) 2. (6 ÷ 3) x (11 - 4) 3. 9 x 3 + (120 - 181)
Answer (1)
Let's solve each mathematical expression step-by-step:
Expression: 7 × 2 − ( 9 + 2 )
First, solve what’s inside the parentheses:
9 + 2 = 11
Now replace and continue:
7 × 2 − 11
Then perform the multiplication:
7 × 2 = 14
Finally, subtract:
14 − 11 = 3
Expression: ( 6 ÷ 3 ) × ( 11 − 4 )
Start with the division inside the first set of parentheses:
6 ÷ 3 = 2
Then calculate inside the second set of parentheses:
11 − 4 = 7
Now multiply the results:
2 × 7 = 14
Expression: 9 × 3 + ( 120 − 181 )
Start with subtraction inside the parentheses:
120 − 181 = − 61
Then do the multiplication:
9 × 3 = 27
Finally apply the addition:
27 + ( − 61 ) = − 34
In summary, the solutions are:
3
14
− 34
