Respuesta :

Dxtcho

Answer:The simple set would be to just add them together,but the way math teaches you is to create like terms.So instead of -4x we get 4x.Then add the 4 and 5 without the x to get 9.Then add back the x and your negative. -9x

Hope this helps!

Answer:

Add 4x to both sides.

Step-by-step explanation:

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