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How do I simplify the equation 4x + 5x -2 - 2x + 7?

To simplify an equation the x terms can be collected together to give: 4x + 5x - 2x = 7x

The numbers can be collected together to give: -2 + 7 = 5

Which then when put together makes 7x + 5

Natasha B. GCSE Maths tutor, GCSE Art tutor, GCSE Spanish tutor, A Le...

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