The best method for solving the system of linear equation is by the use of algebraic methods.
The system of linear equations can be solved by using the method of simultaneous equations. Here we are given two equations and two unknown variables. We can solve the same by eliminating one of the variables and then either adding or subtracting, find the value of the other variable. Once we know the value of one variable, then we can substitute its value in any one given equation and find the second variable. This method is said to be accurate and does not involve any error.
Hence answer is : USE ALGEBRAIC METHODS
The first equation is :
5(x-3)=20
5x-15=20
The property is from multiplication, it is called distributive property says that "multiply the outside number with each term inside the parenthesis.
Second equation is
5(x-3)=20
x-3=4
It is an equation property when a number multiply it change to divide the other side of the equality.
This is essentially a rule in the unit of radicals, where n✔️X^m = X^m/n. If the value of m is equal to n, as in 2✔️3^2 it would simply be 3^2/2 which is nothing but 3^1 = 3. Basically, the m value can be greater than n and or less than n, but if it is equal the m and n values cancel out.
Answer:
47.5
Step-by-step explanation:
