Question

7a - b = 15a how do you solve for this equation

Answer 1

Answer:

$\boxed{a=-b/8}$

Step-by-step explanation:

Addition property of equality- adding the same number to both sides of an equation it does not change the equation.

Subtraction property of equality- subtracting the same number from both sides of an equation it does not change the equation.

Checking a solution for addition property of equality, and subtraction property of equality.

1. You had to rewrite the original equation.

2. Then substitute the value for the variable.

3. And finally simply, and it just gave us the final answer is.

First add by b from both sides of an equation form.

$7a-b+b=15a+b$

Then simplify of an equation.

$7a=15a+b$

Next, subtract by 15a from both sides of an equation form.

$7a-15a=15a+b-15a$

Simplify.

$-8a=b$

You can also divide by negative eight from both sides of an equation form.

$\frac{-8a}{-8}= \frac{b}{-8}$

Finally, simplify by equation.

$a=-\frac{b}{8}$

Hope this helps!

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-Charlie