Question

Solve the eqution 2x+3=9 using trial method.
please send me answer.​

Answer 1

Answer:

x=3

Step-by-step explanation:

Let x = 1,

2x+3=9,

2×1+3=9,

2+3=9,

5 is not equal to 9

Therefore, x is not 1.

Let x = 2,

2x+3=9,

2×2+3=9,

4+3=9,

7 is not equal to 9

Therefore, x is not 2.

Let x = 3,

2x+3=9,

2×3+3=9,

6+3=9

9=9

Therefore, x is 3.

Answer 2

To solve:

• The eqution 2x+3=9 using trial method.

Solution:

Let's understand the concept first! Here we are asked to solve the equation 2x + 3 = 9 using the trial and error method. In the trial and error method we assume values for x and substitute it in the equation. We continue doing this untill the equation is satisfied.

If x = 1

• f(x) = 2x + 3 = 9

• f(1) = 2(1) + 3 = 9

• f(1) = 2+3 = 9

• f(1) = 5 ≠ 9

∴ x ≠ 1

If x = 2

• f(x) = 2x + 3 = 9

• f(2) = 2(2) + 3 = 9

• f(2) = 4 + 3 = 9

• f(2) = 7 ≠ 9

∴ x ≠ 2

If x = 3

• f(x) = 2x + 3 = 9

• f(3) = 2(3) + 3 = 9

• f(3) = 6 + 3 = 9

• f(3) = 9 = 9

• LHS = RHS

∴ x = 3

∴ The value of x = 3

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