Find the Value of 3a − 2b, When a = 8 and B = 10 - Mathematics

Find the value of 3a − 2b, when a = 8 and b = 10

योग

3a − 2b

= 3 × 8 − 2 × 10

= 24 − 20

= 4

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Concept of Substitution

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

अध्याय 20 Substitution (Including Use of Brackets as Grouping Symbols)
Exercise 20 (A) | Q 2.3

Find the value of `"yx"/"z"`, when x = 8, y = 4 and z = 16

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Find the value of 5x² – 3x + 2, when x = 2.

Simplify:

12x − (5x + 2x)

Simplify:

`"a"−[−{−(a−overline("b"-"c"))}]`

Fill in the blank:

6p − 5x + q = 6p − (...........)

Find the value of 3ab + 10bc – 2abc when a = 2, b = 5 and c = 8.

If P = − 12x² – 10xy + 5y², Q = 7x² + 6xy + 2y², and R = 5x² + 2xy + 4y²; find P – Q

If P = − 12x² – 10xy + 5y², Q = 7x² + 6xy + 2y², and R = 5x² + 2xy + 4y²; find P + Q + R

Simplify:

`12"x"^2-(7"x"-overline(3"x"^2+15))`