Equation (+ what is the unknown) - Examples, Exercises and Solutions

Variable

A variable is a specific symbol like a Latin letter – $X$ / $Y$ / $Z$ that can change and represent a quantity/value.

Question 1

$$ 5x=0 $$

Question 2

$$ 5x=1 $$

What is the value of x?

Question 3

$$ 14x+3=17 $$

$x=\text{?}$

Question 4

$$ 2x+7-5x-12=-8x+3 $$

$5x=0$

$x=0$

$5x=1$

What is the value of x?

$x=\frac{1}{5}$

$14x+3=17$

$x=\text{?}$

$x=1$

$2x+7-5x-12=-8x+3$

$x=\frac{8}{5}$