What-s the value of x if x-2-5 -A- 1B- 2C- 3D- 4

The correct option is C 3Given equation: x + 2 = 5 nbsp; now using trial and error method, case 1: Putting x = 1 in the equation, nbsp; we get LHS = 1 ...

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Standard VI

Mathematics

Finding Solution of an Equation by Trial and Error Method

What's the va...

Question

What's the value of x if x + 2 = 5?

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Solution

The correct option is C 3
Given equation: x + 2 = 5
now using $t r i a l a n d e r r o r m e t h o d$ ,

case 1:

Putting x = 1 in the equation,
we get LHS = 1 + 2 = 3 and RHS = 5
Hence, LHS is not equal to RHS.

case 2:

Putting x = 2 in the equation,
we get LHS = 2 + 2 = 4 and RHS = 5
Hence, LHS is not equal to RHS.

case 3:

Putting x = 3 in the equation,
we get LHS = 3 + 2 = 5 and RHS = 5
Hence, LHS is equal to RHS.

$∴$ x = 3 is the solution for given equation.

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