Step 1) Add
7
to each side of the equation to isolate the
x
term while keeping the equation balanced:
3
x
−
7
+
7
=
27
+
7
3
x
−
0
=
34
3
x
=
34
Step 2) Divide each side of the equation by
3
to solve for
x
while keeping the equation balanced:
3
x
3
=
34
3
3
x
3
=
34
3
x
=
34
3
X/y (3/-1 just look at where the a is if it is o. ln the x axis or y axis then look to see if it's positive or negative
Answer:
b
Step-by-step explanation: got it right on edge
Answer:
Step-by-step explanation:
Square Root of 225 is 15 (with -15 also it would work but let’s stick to positive root)
Now, the 1st Odd Number is 15 -2 = 13 and the 3rd Odd Number is 15 + 2 = 17.
The required Numbers are 13 and 17.
This works for 3 consecutive Even Numbers also.
Why does it work?
Because, if we have 3 numbers to be a-2, a and a+2 (Doesn’t really matter if a is positive or negative)
(a-2)*(a+2) = a^2 - 4
So, you see adding 4 to the Product of the 1st Number and the 3rd Number (a^2 - 4 + 4 = a^2) gives you the square of the Middle Number, which is a^2!
