1/5 = 0.2 = 20%
100% - 20% - 10% = 70%
He left 70%
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Answer:

Step-by-step explanation:
The polynomial given for simplification is:

Now, we combine like terms using the commutative property of addition.
The commutative property of addition states that:

So, the order can be shuffled when we add terms.
The terms containing 't' are grouped together and the constant terms are grouped together. This gives,

Now, we group them using associative property and converse of distributive property as:

Simplifying the above expression, we get:

Therefore, the simplified form is 
urrrrrrrrrrr....... bro why you bully
<u>2 - z</u> + <u>5z × 3</u>
4 z
<u>2 - z</u> + <u>15z</u>
4 z
<u>z(4)(z</u>) + <u>15z(z)(4)</u><u />
4(z) 4(z)
<u> 4z²</u> + <u> 60z²</u>
4z 4z
<u>64z²</u>
4z
16z
For this equation we are factoring. When you do this. You get the answer of:
(-3x²+8x-7)