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Do you understand how to substitute?

yeh

Okay, firstly, you want one equation as either Y or X by itself.

If you do that part, i'll then explain the next step.

okay wat the next step

write the equation you've got for your isolated variable in here.

|dw:1360887641308:dw| is that right how i solve for y

- 7y + - 7y is not zero and 4x + x is 5x

could u show me the step please @Rachel98

Okay, here is an example problem I'll draw it.

|dw:1360888023089:dw|

|dw:1360888146491:dw|

|dw:1360888346035:dw|

Now all we have to do is divide both sides by - 1, so undo the multiplication

|dw:1360888489391:dw|

could u help me with my problem cuz i dont understand ur problem

|dw:1360888601809:dw|

Remember, a negative * a negative is a positive.

|dw:1360888933281:dw|