What is the answer for this question 3(a-7)=6a

a=-7

Step-by-step explanation:The given equation is 3(a-7)=6a

Using distributive rule we have:

3a-21=6a

21 is subtracted to 3a .We always perform the opposite operation both sides.

Opposite of subtraction is addition

Adding 21 both sides

3a=6a+21

Subtracting 6a both sides:

3a-6a=21

-3a=21

Dividing both sides by -3 we have

a=-7.

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

answer: $201

step-by-step explanation: to get the answer, you first get 3 nieces that he sold and multiply it by 67 and get $201, so he earned $201 selling his nieces.