3 years ago

12-n/7=-1 what y’all think the answer is

Mathematics

2 answers:

mestny [16]3 years ago

8 0

Answer:

Step-by-step explanation:

12-n/7 = -1

Cross multiply

We have 12-n = -7

Collect like terms

12 + 7 = n

Therefore n = 19

mylen [45]3 years ago

3 0

Answer:

n=91

Explain:

mutiply both sides of the equation by 7: 84-n=-7

move constant to the right and change its sign: -n= -7 - 84

find the diffrence= -n= -91

change the signs: n=91

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Gnesinka [82]

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Step-by-step explanation:

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2 years ago

What property is this? <br> (10b+12b)+7b=(12b+10b)+7b

cluponka [151]

Commutative Property

a + b = b + a

Because:

<span>(10b+12b)+7b=(12b+10b)+7b
</span>
(10b + 12b) in the first bracket is the same as (12b + 10b)

3 0

2 years ago

Need help with this im confused

Jet001 [13]

Answer:

$-\frac34 -\frac14 i$

Step-by-step explanation:

Let's start with distributing: $\frac1{4i}-\frac{3i}{4i}$ Simplify i with i in the second term, and rearrange. $-\frac34 +\frac1{4i}$ . Since i in the denominator looks ugly, let's multiply top and bottom by i. $-\frac34 +\frac i{4i^2} = -\frac34 +\frac i{4(-1)} =-\frac34 -\frac14 i$ . The middle passage is based on the fact that, by definition, $i^2=-1$