Question

solve the equation
x + 0.3 x = 3.9​

Answer 1

Answer:

Simplifying

x + 0.3x = 3.9

Combine like terms: x + 0.3x = 1.3x

1.3x = 3.9

Solving

1.3x = 3.9

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Divide each side by '1.3'.

x = 3

Simplifying

x = 3

Answer 2

x + 0.3x = 3.9

(1+0.3) x = 3.9

1.3x = 3.9

x = 3.9/1.3

x = 39/13

x = 3