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Mathematics 10 Online
OpenStudy (anonymous):

Solve. j = http://static.k12.com/bank_packages/files/media/mathml_770db8e40ee1917d0bffc2e29ecf369d229a47ab_1.gif

OpenStudy (anonymous):

Do you see what the first step would be?

OpenStudy (anonymous):

Hint: what is the inverse (opposite) operation of divide by 11?

OpenStudy (anonymous):

im listinging

OpenStudy (anonymous):

The opposite of division is ...?

OpenStudy (anonymous):

*

OpenStudy (anonymous):

The opposite of division is multiplication, correct!

OpenStudy (anonymous):

We can multiply both sides of the equation by 11. We would do this to cancel the 11 in the denominator on the left hand side of the =.

OpenStudy (anonymous):

11 * (3+j/11) = 2 * 11

OpenStudy (anonymous):

The 11's cancel on the left hand side of the = and on the right hand side we get 2 * 11, which is equal to ...?

OpenStudy (anonymous):

3 + j = ...?

OpenStudy (anonymous):

one sec

OpenStudy (anonymous):

-11?

OpenStudy (anonymous):

Okay, remember that 2 times 11 is the same as 11 + 11 = 22

OpenStudy (anonymous):

Not quite! 2 * 11 = 22 because 2 times 11 is the same as 11 + 11, which is 22.

OpenStudy (anonymous):

So we would get 3 + j = 22. Do you have any questions about that last step?

OpenStudy (anonymous):

No

OpenStudy (anonymous):

The next step is to move the 3. We can move the 3 by doing the opposite of +3 to both sides. Do you know what the opposite of +3 is?

OpenStudy (anonymous):

Hint: what is the opposite of addition?

OpenStudy (anonymous):

The opposite of addition is subtraction, so we would subtract 3 from both sides next.

OpenStudy (anonymous):

3 + j - 3 = 11 - 3

OpenStudy (anonymous):

On the left hand side of the equation we can combine 3 - 3 together and get 0.

OpenStudy (anonymous):

j = 11 - 3

OpenStudy (anonymous):

The final step is to subtract 3 from 11. Do you know what 11 - 3 is equal to?

OpenStudy (anonymous):

11 - 3 = 8, so j = 8 would be the final answer. Do you have any questions about what we just did?

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