Question

Solve the following linear equation


3x +2 = 20 ​

Answer 1

Step-by-step explanation:

3x+2x+4=20-2x+5

=>5x+4=25-2x

=>5x+2x=25-4

=>7x=21

=>x=21÷7

=>x=3

hope it helps...

Answer 2

Given :-

• A linear equation ___ 3x +2 = 20

To Find :-

• Value of x

Solution :-

We know, a linear equation in one variable can be written in the form

ax + b = 0

Given that,

3x + 2 = 20

It can be written in the form of ax + b = 0 by subtracting 20 from both sides. However, we can solve this equation by performing algebraic operations.

3x + 2 = 20

⟹ 3x = 18 ( Subtract 2 from both sides)

( Multiply both sides by ⅓ or, divide by 3)

⟹ x = 6

Hence, the solution is x = 6

Verification :-

3x + 2 = 20

⟹ 3 × 6 + 2 = 20

⟹ 20 = 20

L.H.S = R.H.S

( Verified)

$★ {\underline{\underline{\large{\bold{More\:Information:-}}}}}$

✰ What's a linear equation ?

⟹ It’s an equation of a straight line ( written in one variable)

a linear equation in one variable can be written in the form

ax + b = 0

( Where, a & b are real numbers, a ≠ 0)

✰ What we need to do for solving a linear equation ?

⟹ We may add, multiply, subtract or divide an equation by a number. But remember __ we can't divide by (0) zero. Sometimes , we need to apply the distributive property for solving a linear equation. Isolation of the variable on one side is also needed for solving a linear equation.