You need LCD or the least common denominator. For 4 over 8 and 2 over 8 have the same denominators except for 2 over 4. You need to ask yourself what times 4 equals to 8? 4 times 2 equals to 8, so multiply 4x2 for the denominator and for the numerator multiply 2x2. Whatever you do to the denominator you have to do the same thing to the numerator. You multiplied 4x2 for the denominator and 2x2 for the numerator and now your fraction is 4 over 8. Now add 4 over 8+ 4 over 8 which is 8 over 8 or 1. Now add 1+ 2 over 8 which is 1 2/8. If you simplify 1 2/8 it will become 1 1/4.
Hope that helped:D
Answer:
20
Step-by-step explanation:
x+2x+x+10=90
4x=80
x=20
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Answer:
192y16
Step-by-step explanation:
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Answer
The answer is x=5
Step-by-step explanation:
17x-3-x-9=68
Okay so first you need to combine similar terms.
So -3-9=-12
17x-x=16x
So then you get 16x-12=68
Add 12 on both sides
then you get 16x= 80
Divide by 16 on both sides
80/16=5
so then you get
x=5
