Duplicate of CLT, Distributive Prop., One-Step Equations

简化

Distribute: -5(-2c + 7)

Is the following problem simplified correctly? 对吗

Is a frogberry a real animal?蛙莓是一种真正的动物吗？

What operation is used when distributing?分配律用的是什么运算？

Simplify:

这节课的内容我已经会了 I think I learned a lot in this class

Simplify:

Combine Like Terms: 4x - 5t + 3 - 6t + 15x

简化 -2 (6x + 3) - 5

Which is an example of 相同项?

Simplify: 20 + 3(r - 2) +5

When simplifying expressions, change subraction to addition，distribute , then combine like terms. 先变减法为加法，再分配律，然后合并同类项。

Solve for x:

Solve: -8(1 + r)