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Equations 4.

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Equations 4.

Here, there are some unknowns on both sides of the equation, and now we learn to rearrange (group) them on one side. Then we learn about the concepts of identities and inequalities. Finally, we learn how to expand brackets in the equations and trace it back to grouping.

Grouping like terms 1.:

Grouping like terms 2.:

Grouping like terms 3.:

Identity

Inequality:

Expanding the brackets on one side:

Expanding the brackets on both sides:

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