Simplify the expression and find the value if $x = 3, a = - 1, b = - 2 . 10 - 3 b - 4 - 5 b$

Open in App

Solution

Finding the Value of an Expression.
Given $10 - 3 b - 4 - 5 b$
Put $x = 3, a = - 1, b = - 2$ in the given expression
$∴ 10 - 3 b - 4 - 5 b = 10 - 3 (- 2) - 4 - 5 (- 2) = 10 + 6 - 4 + 10 = 26 - 4 = 22$
Hence, the value of $10 - 3 b - 4 - 5 b$ is $22$ .

Suggest Corrections

Similar questions

Simplify these expressions and find their values if x = 3, a = − 1, b = − 2.

(i) 3x − 5 − x + 9 (ii) 2 − 8x + 4x + 4

(iii) 3a + 5 − 8a + 1 (iv) 10 − 3b − 4 − 5b

(v) 2a − 2b − 4 − 5 + a

Question 7 (ii)

Simplify these expression and find their values if x = 3, a = -1, b = -2:
2 - 8x + 4x + 4

Question 7 (v)

Simplify these expressions and find their values if x = 3, a = -1, b = -2:
2a - 2b - 4 - 5 + a

Question 7 (iii)

Simplify these expressions and find their values if
x = 3, a = -1, b = -2:
3a + 5 - 8a + 1

Question 7 (iv)

Simplify these expressions and find their values if x = 3, a = -1, b = -2:
10 - 3b - 4 - 5b

Join BYJU'S Learning Program