Solve the system by substitution

y = x
y = 4x - 9

The solution to the system of equations will be:

Step-by-step explanation:

Given the system of equations

y = x

y = 4x - 9

solving the system of equations by the substitution method

substitute y = 4x - 9

now isolate x for 4x-9 = x

Add 9 to both sides

Simplify

Subtract x from both sides

Simplify

Divide both sides by 3

Simplify

For y=4x-9 substituute x = 3

Simplify

Therefore, the solution to the system of equations will be:

3-4

step-by-step explanation:

the answer is 3-4 because both 45 and 60 has a multiple of 15.

45/3=15

60/4=15

therefore the odds against selecting a red is 4-3