Maths

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I got the last question so please don't worry..

These are the ones I get confused with.

7y +21 x - 15 = 4y- 12 + 13

I need to see the numberical working out asap if someone would be so kind .. thanks P

• Maths -

7y +21 x - 15 = 4y- 12 + 13

I assume that once again, you are solving for y ?

7y - 4y = -12 + 13 + 15 - 21x
3y = 16 - 21x
divide each term by 3

y = 16/3 - 7x

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