Solve -4(-2y + 3) = 20.

-1
1
4
-4

Question

Solve -4(-2y + 3) = 20.

-1
1
4
-4

goldphenoix · Answer

Do you remember how to do the distributive property?

anonymous · Answer

Not at all, and I look up a example on how, but it only confuses me more.

goldphenoix · Answer

Alright. I'll show you.

goldphenoix · Answer

|dw:1373047738288:dw|

goldphenoix · Answer

So what is -4 * -2y give you, and what does -4 *3 give you?

anonymous · Answer

-4 and -2y is 8 and the other is -12, yes?

marissalovescats · Answer

So basically.. |dw:1373047733081:dw|

goldphenoix · Answer

No!!! I don't like when people mest up my learning! T~T

goldphenoix · Answer

teaching*

anonymous · Answer

I'm still confused..

goldphenoix · Answer

Anyway, -4 * -2 does equal to 8. But It's -4 * -2y. What happened to the y? What can we times y to? Well, you can't times y to nothing, so you leave y. So you leave it as -8y. Do you understand it?

goldphenoix · Answer

-4 * 3 does equal to -12. That's correct! :)

anonymous · Answer

distribute nothing
1) divide both sides by $-4$
2) subtract $3$ from both sides 
3) divide both sides by $-2$

anonymous · Answer

Yes.

goldphenoix · Answer

Anyway, after doing the distributive property, your equation should look like: |dw:1373048018002:dw|

anonymous · Answer

So the answer is -1?

goldphenoix · Answer

Nope. What is 20 divided by - 12?

marissalovescats · Answer

Okay how about this. Give a random example of distributive property. |dw:1373048018503:dw|