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r-ruslan [8.4K]
3 years ago
15

Simplify the expression 7(a-3+4b)

Mathematics
1 answer:
castortr0y [4]3 years ago
4 0

Answer:

7a - 21 + 28b

Step-by-step explanation:

using the distributive property we can multiply 7 to the numbers in the paretheses. doing this we get:

7a - 21 + 28b

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y =  \frac{1}{mx}

11 =  \frac{1}{8m}

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2 years ago
How many solutions does the equation (x-7)^2-27=37 have?
atroni [7]

Answer:

If we are solving for x it has<u> two answers</u> <u>   15,-1</u>

EXPLANATION:

first i take the root of both sides and then solve from there :

Step 1: Simplify both sides of the equation.

x2−14x+22=37

Step 2: Subtract 37 from both sides.

x2−14x+22−37=37−37

x2−14x−15=0

Step 3: Factor left side of equation.

(x+1)(x−15)=0

Step 4: Set factors equal to 0.

x+1=0 or x−15=0

x=−1 or x=15

HOPE THIS HELPS

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