Answers edited by Prashant S.
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What are the laws of refraction?

How do you solve #a/15=4/5#?

How do you solve #4x + 9 = 7x#?

How do you simplify #48  2/3 #?

How do you multiply and simplify #\frac { 11} { 8} \cdot \frac { 19} { 11}#?

What is 150% of $10?

What is 81% as a fraction?

How do you solve #4( 3x  2) = 28#?