x/y + z/w =? A BASIC Fraction problem MANY will get WRONG! 

At the title card, I'm going with c) (xw + yz)/(yw). Cross-multiply each numerator with the opposite denominator, then multiply the two denominators to get everything to a common denominator.

C. Cross multiplication.

We multiply both the denominator and the numerator by the same number (e.g. 5), because we cannot change the fraction, such we practically multiply those fractions by 1 (one), the neutral number of the multiplication 😃, which can be written either by 5/5 = 1, or 2/2 = 1, or w/w = 1, or y/y = 1.😄 We just peak the fraction which suits us, for 1/2 it will be 5/5, and for 3/5 it will be 2/2, for this way will get the same denominator, 10 (ten), and for x/y it will be w/w =1, and for z/w it will be y/y =1, in view to get the same denominator, y•w ! LOVELY! Thank you, Pro ! 🙏 Though, I do not agree those last teachings you've done, which are in vogue in the British/American curriculum (?) perhaps, used in view to "help" the students to think less 🥱, and solve more... Hm! 🤔 It's like getting some stimulants for grate muscles, without practice...🧐 Really ?? Isn't right the idea of exercise any of our knowledge in Math, anytime it arise the moment 🤗

The common denominator (not necessarily the Least) is yw Multiply the equation by 1 (yw) / (yw) = 1 (xw) / (yw) + (yz) / (yw) (xw + yz) / yw It is so much easier on paper where I can use the long underscore for division and avoid those parentheses)

It's C You need the LCD of Y and W ... which is YW and then you multiply X by W and Z by Y

Thanks John! I looked at this, I choked, and I twisted up my brain… then, when I used the bowtie method… I untwisted up my brain and got the right answer!

Another math confidence builder: MANY WILL GET WRONG!!!!

got it C easy cross multiplication. thanks for the fun.

Most don't realize people use algebra daily. Construction workers, manufacturing fabricators, carpenters, drug dealers, lawyers, math instructors, ect.......

C. Final answer.

C. Bow Tie Method.

Cross multiplication is how I learned it.

C)

c)

(xw+yz)/(yw)

a)xz/yw

B.

C.

oh! how easy!..... lyrics: ...... C.

C is the correct answer

You imply that being unable to answer a question that is irrelevant to most people is somehow a fault in them. Possibly this is unfair.

My gosh why the long long long explanation

I like your math explanations but please talk a little less, after seeing a couple of the videos hearing the same parts over and over again is getting annoying.

c)

a)xz/yw

C)

c)

c)

a)xz/yw

a)xz/yw