Answer:
x = 12
Step-by-step explanation:
As you know, a right angle is 90 degrees. So the equation has to add up to 90.
Here is the equation:
7x + 6 = 90
Now, instead of doing
7 x 1
7 x 2
7 x 3... or counting up to see which equals 90 when added 6 to, here's a trick.
Step 1:
As you know, PEMDAS helps you solve an equation.
But when we need to find x, we do the opposite.
Now it is SADMEP or,
Subtraction
Addition
Division
Multiplication
Exponents
Parentheses (the opposite of PEMDAS)
Step 2:
Keep this in mind: When finding x, the order of operations will be the opposite.
So instead of adding 6 + 90,
You have to subtract 6 from 90
90 - 6 is 84.
Step 3:
Remember how we have to multiply the x value to seven?
Instead, we're gonna divide.
84 ÷ 7 = 12
So, x = 12!
(remember to use SADMEP and opposite of order of operations :) )
Anytime! Hope this helps :)
-jp524
