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Q1. 15 X ( 10y - 2a ) = Q2. HCF of : 20, 30 ,49 =​

Answer»

Hey there, here is your ANSWER,

1. QUESTION :

  • 15 × ( 10 y - 2A)

1. Answer :

★ 15 × ( 10 y - 2a)

[ Multiplying 15 and 10 and then multiplying 15 and 2]

➥ 150y - 30a

.°. The answer is 150y - 30a.

2. Question :

  • HCF of : 20, 30 ,49 .

2. Answer :

Firstly, FINDING the H.C.F. of 20 and 30.

20 ) 30 ( 1

ㅤ - 20

ㅤ 10 ) 20 ( 2

ㅤ ㅤ - 20

ㅤ ㅤ ㅤ x

.°. The H.C.F. of 20 and 30 is 10.

Secondly, finding the H.C.F. of 10 and 49.

10 ) 49 ( 4

ㅤ - 40

ㅤ 9 ) 10 ( 1

ㅤ ㅤ - 9

ㅤ ㅤ ㅤ 1 ) 9 ( 9

ㅤ ㅤ ㅤ - 9

ㅤ ㅤ ㅤ ㅤ x

.°. The H.C.F. of 20, 30 and 49 is 1.

Please mark my answer as brainliest.


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