Respuesta :

dagmawiwassihun

Answer:

B is the answer

Step-by-step explanation:

hope this help

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9-4x+7x=15
9+3x=15
move 9 to the other side
sign changes from +9 to -9
9-9+3x=15-9
3x=6
Divide by 3 for both sides
3x/3=6/3
Cross out 3 and 3, divide by 3 and then becomes 1*1*x=x
x=2
Answer: x=2

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