5 1/4 - (-3.55) + (-3 2/5)

Answer:5.4Step-by-step explanation:Conversion a mixed number 3 2/5 to a improper fraction: 3 2/5 = 3 2/5 = 3 · 5 + 2/5 = 15 + 2/5 = 17/5To find a new numerator:a) Multiply the whole number 3 by the denominator 5. Whole number 3 equally 3 * 5/5 = 15/5b) Add the answer from previous step 15 to the numerator 2. New numerator is 15 + 2 = 17c) Write a previous answer (new numerator 17) over the denominator 5.Three and two fifths is seventeen fifthsConversion a mixed number 5 1/4 to a improper fraction: 5 1/4 = 5 1/4 = 5 · 4 + 1/4 = 20 + 1/4 = 21/4To find a new numerator:a) Multiply the whole number 5 by the denominator 4. Whole number 5 equally 5 * 4/4 = 20/4b) Add the answer from previous step 20 to the numerator 1. New numerator is 20 + 1 = 21c) Write a previous answer (new numerator 21) over the denominator 4.Five and one quarter is twenty-one quartersAdd: 17/5 + 21/4 = 17 · 4/5 · 4 + 21 · 5/4 · 5 = 68/20 + 105/20 = 68 + 105/20 = 173/20It is suitable to adjust both fractions to a common (equal, identical) denominator for adding, subtracting, and comparing fractions. The common denominator you can calculate as the least common multiple of both denominators - LCM(5, 4) = 20. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 5 × 4 = 20. In the following intermediate step, it cannot further simplify the fraction result by canceling.In other words - seventeen fifths plus twenty-one quarters is one hundred seventy-three twentieths.

Answer:Decimal: 5.4Fraction: 5 2/5 or 27/5Step-by-step explanation:Decimal:5 1/4 = 5.25 -3 2/5 = -3.45.25 + 3.55 - 3.4 (Simplified)= 5.4Fraction:-3.55 = -71/20 or -3 11/205 1/4 + 3 11/20 - 3 2/5 (Simplified)= 5 2/5