PLEASE ANSWERRR I WILL GIVE TEN POINTS ITS EASY I SWEAR IM JUST NOT CAPABLE BECAUSE OF MY OTHER ASSIGNMENT PLES IM BEGGING

1) In order to add or subtract fractions denominator must be equal

Lcm of denominator is 4×5=20 since they are co primes

Now the denominator becomes same

2)

Lcm =8

3)

We just need to add the fractions

Lcm=12

hope it helps :)

plz mark as brainliest

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!