Answer:

Step-by-step explanation:
The equation is

Solve for x
we know that

substitute

so

5x7=35
5x7=5x(5+2)
5x7=(5x3)+(5x4)
5x7=20+15
5x7=35
This is how I would do it :)
Answer:
180
Step-by-step explanation:
Base x Height
So 9 x 20 to get 180
1+38*225(12/77)
1+38*225*6.41
1*8550*6.41
1+54,805.5
54,806.5
Use pemdas to solve it
You have to make the denominators(bottom of the fraction) the same in order to combine the fractions.
To make the denominator of
the same as
, you multiply the top and bottom of the fraction by 2 (because they both have a common multiple of 4)

So:
