Evaluate: (9a – 3a) + 4a - Mathematics

Evaluate:

(9a – 3a) + 4a

योग

(9a – 3a) + 4a = 6a + 4a = 10a

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Concept of Substitution

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अध्याय 20: Substitution (Including Use of Brackets as Grouping Symbols) - Exercise 20 (B)

अध्याय 20 Substitution (Including Use of Brackets as Grouping Symbols)
Exercise 20 (B) | Q 1.4

Fill in the blank, when:
x = 3, y = 6, z = 18, a = 2, b = 8, c = 32 and d = 0.

d − a + x = ................

Find the value of 2a + 4b + 5c, when a = 5, b = 10 and c = 20

If a = 3, b = 0, c = 2 and d = 1, find the value of ab − bc + cd − da

Find the value of 3x³ – 4x² + 5x – 6, when x = − 1.

If x = 2, y = 5 and z = 4, find the value of the following:

`(5"x"^4"y"^2"z"^2)/(2"x"^2)`

Evaluate:

(23 – 15) + 4

Simplify:

a − (a − b − c)

Simplify:

3x − [5y − {6y + 2 (10y − x)}]

Fill in the blank:

5a + 4b + 4x − 2c = 4x − (...........)

If x = 3, y = 2 and z = 1; find the value of xy + y²z – 4zx