Question

1. If a = 2, b = 3 find the value of the following algebraic expressions.
(a) 3a + 2b
(b) 2a - b​

Answer 1

Solution :-

• Value of a = 2.
• Value of b = 3.

(A) Answer :- 12.

➠ 3a + 2b.

➠ 3(2) + 2(3)

➠ 6 + 6.

➠ 12.

(B) Answer :- 1.

➠ 2a – b.

➠ 2(2) – 3.

➠ 4 – 3.

➠ 1.

Therefore, The Answers are :- 12 and 1.

Answer 2

Question:-

If a = 2, b = 3 find the value of the following algebraic expressions.

(a) 3a + 2b

(b) 2a - b

Answer:-

• Value of the algebraic expression(a) is 12
• The value of algebraic(b) expression is 1.

Solution:-

a)

$\large{ \tt : \implies \: \: \: \: 3a + 2b}$

• Value of a = 2
• Value of b = 3

$\large{ \tt : \implies \: \: \: \: 3(2) + 2(3)}$

$\large{ \tt : \implies \: \: \: \: 6 + 6}$

$\large{ \tt : \implies \: \: \: \: 12}$

• Value of the algebraic expression is 12

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b)

$\large{ \tt : \implies \: \: \: \: 2a - b}$

• Value of a = 2
• Value of b = 3

$\large{ \tt : \implies \: \: \: \: 2(2) - 3}$

$\large{ \tt : \implies \: \: \: \: 4 - 3}$

$\large{ \tt : \implies \: \: \: \: 1}$

• The value of algebraic expression is 1.