John Zimmerman, www.tabletclass..., explains how to cross cancel fractions. These type of problems are vital for homeschoolers to learn and master for pre-algebra, algebra 1 and high school math courses.
"You've been trained to cross cancel but you don't know why you've been doing it". BINGO. This is what my education was missing. The WHY of things. The real fundamentals. Thank you.
He was verbose. However he could have simplified things by saying he was breaking apart the larger numbers to lowest terms ( in order to find one/one ratios to cross out) because they always equal one
