By dismantling
14 = 7 • 2
21 = 7 • 3
The least common multiple is
7 • 2 • 3 = 42
Hope this helps.
Answer:
5
Step-by-step explanation:
-7 x 4 = -28
-7 x -6 = 42
-28 + 42 = 14
14 - 9 = 5
Step-by-step explanation:
65) Perimeter = 13 + 12 + 5 or 30 cm
Area= 5 x 12 / 2 or 30 cm^2
Perimeter formula: Add all the sides
Area formula ( triangle)= 1/2 bh
66) Perimeter = 8 + 4 + 7 + 3.5 or 22.5 ft
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:) Hope this helps</em></u></h3>
Answer: 1 1/18
Step-by-step explanation: 5/6 + 2/9 I know this might seem like common, but <em>the </em><em>Numerator is the top number of a fraction</em><em> and the </em><em>Denominator is the bottom a fraction.</em> When the numerator and the denominator are the same such as 5/5 the fraction equals one (I know its real fancy). When you're multiplying a fraction that equals on by another fraction its really just multiplying by a fancy looking 1 that's disguised as a fraction such as 5/5. If you simplify it it goes to the fraction it was as long it was simplified to the max (5/5 x 1/2 = 5/10= 1/2)
- First, you need to find a like denominator, which is 18
- Then, you got to multiply each fraction to make them have common denominators ...multiply 5/6 by 3/3 ( 3/3 is just a fancy way of saying one) 5/6 x 3/3 = 15/18....multiply 2/9 by 2/2 (which is just another fancy way of saying one ) 2/9 x 2/2=4/18
- Next you add them but only the numerator 15/18 + 4/18 = 19/18
- Finally, you change the the fraction into a mixed number 1 and 1/18
