Solving Eqations with Variables on each side? Please Help

So I really don't get how to do this. Can someone please explain it to me slowly? I've looked all over the internet but nothing is making sense to me.

4x - 9 = 6x - 13

t + 10 = 7t - 14

Thanks in Advance!

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It is no different than equations with numbers on both sides, really.

4x - 9 = 6x - 13

Subtract 4x from both sides.

-9 = 2x - 13

Add 13 to both sides

4 = 2x

Divide both sides by 2

2 = x

Use the commutative property of equality.

x = 2

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t + 10 = 7t - 14

Subtract 7t from both sides

-6t + 10 = 14

Subtract 10 from both sides

-6t = 4

Divide both sides by -6

t = -4/6 = -2/3