[(7 + 3) • 5 – 4] ÷ 2 + 2 simplify the following expression showing all steps and explain how the order of operations is applied in each step as the expression is simplified. be sure to include the rules for addition, subtraction, multiplication, division, and the use of grouping symbols in the explanations of the steps used to simplify the expression.

ok, so if we follow the order of operations rules we're told to solve the equation in parentheses first in your case that means we'll be solving (7+3) first

and if you count up 3 from seven you land at 10 simplifying your expression so it now looks like this:

[(10)• 5 -4]÷2+2

now, we can simplify the problem again by doing the next part which is 5-4( because its still in brackets making your problem look like this: (10• 1)÷2+2 or just 10÷2+2

still following the order of operations rule,you must next divide 10 and 2

10÷2=5

and then our problem is 5+2 which is equal to 7!

i really do hope this you, you're welcome in advance! : )

12

step-by-step explanation:

a triangle's   full angle is 180 degrees so 180 - 156 = 24. 24/2=12

part a: 1.08

part b: 27.59