What number plus 4 equals 4? There's one particular number (and only one number) that has the property of giving you back the same number you add it to.
Answer:
The substitution method consists of solving for in one of the equations, basically the one that is easiest, and substituting the resulting expression in the other. With this, the second equation is converted into a linear equation with one unknown, which is solved by simply solving for.
Step-by-step explanation:
l hope and this can help you
The discounted price is $13.5. You do $18 and times it by 0.25. You will get 4.5. You then subtract the 4.5 from the $18 and you get $13.5
i don't think it exists anymore sorry
