the value of x is =45
Explanation:
Given: x - y =30 and y = 15
Let us solve the equation for given y.
Let us use the substitution method to solve the linear equations.
Substitute y= 15 in x - y =30
⇒ x - 15 = 30
⇒x = 30 + 15
⇒x = 45
The value of x in the equation x - y = 30, when y = 15 is 45. A mathematical equation that represents the relationship of two expressions on either side of the sign. It mostly has one variable and is equal to a symbol. Example: 2x – 4 = 2. In the given example, x is a variable.