Solve the following system using substitution.

Answer/Step-by-step explanation:

3. By substitution method, let's substitute for y in the first equation.

Thus,

Solve for x

Add 4 to both sides

Multiply both sides by 3

Divide both sides by 5

Now, substitute 3 for x in the equation.

The solution of the equation is x = 3, y = -2

4. Solving by elimination, let's try to eliminate the x-variable by adding both equation together.

             =>

Divide both sides by -3 to solve for y

Substitute -5 for y in the first equation to find x

Subtract 10 from both sides

Divide both sides by 3

The solution is

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}