Kumon I: Solution Book Upd

Step 3: Substitute x back. Why choose equation A? Could you use B instead?

Reluctantly, she turned to Problem 87. The solution was laid out in neat, numbered steps — but beside each step, in italics, was a question. kumon i solution book

That evening, her mother placed a new book on Mira’s desk. It was slender, unassuming, bound in crimson cardstock. The gold lettering read: Kumon I Solution Book . Mira recoiled. Step 3: Substitute x back

Step 2: Simplify to find x. What happens to y? was a question. That evening

Step 1: Add equation A and equation B. Why? Because the y-coefficients are opposites. Can you see them?