Factor Common Factors: Factor out the common factors in the numerators and denominators.The expression given is (7v−21)/(v−3)⋅(v+10)/(7v−42). We can factor out a 7 from the terms 7v−21 and 7v−42, and we can factor out a 3 from the term v−3.
Factoring Numerators and Denominators: Factoring the numerators and denominators.The factored form of 7v−21 is 7(v−3) because 7×(v−3)=7v−21.The factored form of 7v−42 is 7(v−6) because 7×(v−6)=7v−42.The denominator v−3 is already factored.Now we rewrite the expression with the factored terms:v−37(v−3)×7(v−6)v+10
Cancel Common Factors: Cancel out the common factors.We can cancel the (v−3) term in the numerator of the first fraction with the (v−3) in the denominator because they are the same and not equal to zero (since v cannot be 3, otherwise the denominator would be zero which is not allowed).Now we have:7(v−6)7⋅(v+10)
Cancel Factor of 7: Cancel out the common factor of 7.We can cancel the 7 in the numerator with the 7 in the denominator.Now the expression simplifies to:(v+10)/(v−6)
Check Further Simplifications: Check for any further simplifications.The expression (v+10)/(v−6) cannot be simplified further because there are no common factors left to cancel out.