What is the answer to: 10+8=x/2

10+8=x/2

36

This can be solved using cross-multiplication:

10+8=x/2

First let's deal with the left side of the equation:

10+8=18

So now our equation can be written as:

18=x/2

Now we can start doing some cross multiplication.

Cross multiplication rules: TOP LEFT MULTIPLIED BY BOTTOM RIGHT HAS TO EQUAL TOP RIGHT MULTIPLIED BY BOTTOM LEFT.


Now let's figure out which number is top left, bottom right, top right, and bottom left.

First of all, I'll rewrite the problem:

18=x/2

Now, you may have noticed that on the left side, there is no number that is on the top or bottom, just an 18. However, any number that looks like it's standing on it's own is ACTUALLY STANDING ON TOP OF A 1. Now, let's rewrite the problem:

18/1=x/2

Now that we have the problem rewritten, we can work it out using the rules of cross multiplication:

TOP LEFT MULTIPLIED BY BOTTOM RIGHT HAS TO EQUAL TOP RIGHT MULTIPLIED BY BOTTOM LEFT

Let's write each of those terms one by one:

Top Left: 18
Top Right: x
Bottom Left: 1
Bottom Right: 2

So follow the rule: top left * bottom right = top right * bottom left
18*2=1*x
36 =x (because 1 * x is 1x and 1x is x)

So the final answer is:
X=36

dont try to guess x

Here is how to do it:
first look at both sides and simplify as much as you can.
You can only simplify if they are like terms. Are they numbers or xs
THe left hand side is just numbers so add them together
10+8=18

now we have 18=x/2 So we want x right. But x is not buy itself yet.

WHat is happeneing to x? Its being DIVIDED by 2
what is opposite of division? MULTIPLICATION

So we need to MULTIPLY both sides by 2
18*2=x
36=x

10+8=X/2
18=X/2
MULTIPLY BOTH SIDES BY TWO
18x2=X/2x2
36=X

X = 2(10+8)
X = 36

X=36

36

36

9

x=36