ANSWER

EXPLANATION
We want to simplify

We multiply the first fraction by the reciprocal of the second fraction to obtain,

We cancel the common factors to get,

This gives us,
Value of x will be
.
Equation given in the question → 
To find the value of 'x' in terms of a and b, we will simplify the given equation,




Therefore, Values to filled → Blank 1 = 15
Blank 2 = (a - b)
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brainly.com/question/14318220
Answer:
x=0.2
Step-by-step explanation:
If there are 70 chairs but only 20 rows then that means he will have to set up 3.5 chairs per row, or Brook could set up 14 rows with 5 chairs in each row.
Srry if that didn't help but that's what i got from that.