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Math

Math Snap

PROBLEM

Solve for as:
5x2(10x6)+4=7-5 x-2(-10 x-6)+4=7 Answer

STEP 1

What is this asking?
We need to find the value of xx that makes the equation 5x2(10x6)+4=7-5x - 2(-10x - 6) + 4 = 7 true.
Watch out!
Don't forget to distribute the 2-2 correctly to both terms inside the parentheses!

STEP 2

1. Simplify the equation
2. Isolate the xx term
3. Find the solution

STEP 3

Alright, let's kick things off by distributing that 2-2 to the terms inside the parentheses.
Remember, this means multiplying 2-2 by both 10x-10x and 6-6.
So, we get:
5x+20x+12+4=7-5x + 20x + 12 + 4 = 7 Why? Because 210x=20x-2 \cdot -10x = 20x and 26=12-2 \cdot -6 = 12.

STEP 4

Now, let's tidy things up a bit!
We have some like terms on the left side of the equation.
We've got 5x-5x and 20x20x, and we also have 1212 and 44.
Combining these, we get:
15x+16=715x + 16 = 7 Because 5x+20x=15x-5x + 20x = 15x and 12+4=1612 + 4 = 16.

STEP 5

To get that xx term all alone, we need to subtract 1616 from both sides of the equation:
15x+1616=71615x + 16 - 16 = 7 - 16 15x=915x = -9Remember, we're adding 16-16 to both sides to make the 1616 on the left disappear by adding to zero.

STEP 6

Almost there!
Now, we just need to divide both sides by 1515 to isolate xx:
15x15=915\frac{15x}{15} = \frac{-9}{15} x=915x = -\frac{9}{15}We divide by 1515 to make the 1515 multiplying xx disappear by dividing to one.

STEP 7

We can simplify the fraction by dividing both the numerator and denominator by their greatest common divisor, which is 33:
x=9÷315÷3x = -\frac{9 \div 3}{15 \div 3} x=35x = -\frac{3}{5}

SOLUTION

So, the grand solution is x=35x = -\frac{3}{5}!

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