Respuesta :

ThatOneOcelot
You can only simplify it, because you can't add a number with x to a number without, so it would be  7x+7
coldswat
10x-3x+7
Step 1- Combine like terms (10x-3x)
Step 2- Subtract 7 from both sides
Step 3. Divide by 7
7x=-7
X=-1