Tap the blue circles to see an explanation.
① | Step 1: Write as a fraction by putting in the denominator. Step 2: Multiply numerators and denominators. Step 3: Simplify numerator and denominator. |
② | Step 1: Write as a fraction by putting in the denominator. Step 2: To add raitonal expressions, both fractions must have the same denominator. |
③ | Step 1: Write as a fraction by putting in the denominator. Step 2: To subtract raitonal expressions, both fractions must have the same denominator. |