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5x minus 3 equals 13 minus 3x

 Oct 1, 2014

Best Answer 

 #2
avatar+271 
+5

$$5x-3=13-3x$$

Move the unknown numbers to one side and the known numbers to the other.

$$5x+3x=13+3$$

Add the two unknown numbers.

$$5x+3x=8x$$

Add the two known numbers.

$${\mathtt{13}}{\mathtt{\,\small\textbf+\,}}{\mathtt{3}} = {\mathtt{16}}$$

Divide the total of the known numbers using the unknown numbers.

$${\frac{{\mathtt{16}}}{{\mathtt{8}}}} = {\mathtt{2}}$$

And you're done!

 Oct 2, 2014
 #1
avatar+8261 
+5

To solve the problem, change $$x$$ into 2.

$$5x-3=13-3x\Rightarrow5*2-3=13-3*2$$

Now, multiply from both sides.

$$5*2=10$$

$$3*2=6$$

Now,  combine the equation.

$$10-3=13-6$$

Now, subtract from both sides.

$$10-3=7$$

$$13-6=7$$

Now, compare both answers.

$$7=7$$

As we can see, the answer is correct.

So, the answer is $$\boxed{x=2}$$.

Hope that this helps!

 Oct 1, 2014
 #2
avatar+271 
+5
Best Answer

$$5x-3=13-3x$$

Move the unknown numbers to one side and the known numbers to the other.

$$5x+3x=13+3$$

Add the two unknown numbers.

$$5x+3x=8x$$

Add the two known numbers.

$${\mathtt{13}}{\mathtt{\,\small\textbf+\,}}{\mathtt{3}} = {\mathtt{16}}$$

Divide the total of the known numbers using the unknown numbers.

$${\frac{{\mathtt{16}}}{{\mathtt{8}}}} = {\mathtt{2}}$$

And you're done!

Pyramid Oct 2, 2014

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