21/42 Simplified

Fraction Simplifier Calculator
Simplify the Fraction

What is 21/42 Simplified?

Answer

Fraction 21/42 simplified to lowest terms is
1/2 (½)

= 0.5

GCF(21, 42) = 21 · 1/2 is in lowest terms

Why 21/42 = 1/2

3×7
2×3×7

Cancelled 3 × 7 = 21 = GCF; left 1/2.

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Fraction Simplification Table

FractionLowest Terms
21/277/9
21/283/4 (¾)
21/2921/29
21/307/10
21/3121/31
21/3221/32
21/337/11
21/3421/34
21/353/5 (⅗)
21/367/12
21/3721/37
21/3821/38
21/397/13
21/4021/40
21/4121/41
21/421/2 (½)
21/4321/43
21/4421/44
21/457/15
21/4621/46
21/4721/47
21/487/16
21/493/7
21/5021/50
21/547/18
21/563/8 (⅜)
21/607/20
21/631/3 (⅓)
21/6421/64
21/703/10

FAQ

What is 21/42 Simplified?

Fraction 21/42 simplified to lowest terms is 1/2 (½)

What is 21/42 as a decimal?

Divide the reduced numerator by the reduced denominator: 1 ÷ 2 = 0.5. Reducing the fraction first does not change the value, only the numbers you divide.

What is the GCF of 21 and 42?

The Greatest Common Factor of 21 and 42 is 21, and dividing the numerator and the denominator by it is what brings the fraction to 1/2 (½). A GCF of 1 means the fraction is already in lowest terms.

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