Answer:
x = 3
Step-by-step explanation:
a triangle has 180 degrees in all
a square for an angle is 90 degrees
we can add them all together and get 180
90 + 45 + 8x + 21 = 180
combine like terms
156 + 8x = 180
subtract 156 to each side
8x = 24
then find x
x = 3
Answer:
7
Step-by-step explanation:
5x+3=38 subtract the 3 from the 38 leaving you with 35/5 getting you 7
Hope these answer would help you.
Answer:
53/12
Step-by-step explanation:
5/3+11/4
multiply 4 to 5 and multiply 3 to 11
20/3+33/4
multiply denominators 3 to 4
20+33/12
add 20 to 33
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53/12
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