3 years ago

Which property explains why these two expressions are equal? -5 + (x + 4) = -5 + (4 + x)

Mathematics

1 answer:

Dovator [93]3 years ago

8 0

Answer:

Associative Property

Step-by-step explanation:

Just because the numbers are rearanged, the problem is still the same.

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MatroZZZ [7]

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3 years ago

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4 years ago

Solve y=-2x+6 and 3y-x+3=0 using substitution

Mazyrski [523]

3(-2x+6) -x+3=0
-6x+18-x+3=0
-7x+21=0
-7x=-21
x=3

y=-2x+6
y=-2(3)+6
=6-6
=0

answer: (3,0)

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3 years ago

Solve for a. 7a - 2b = 5a + b a = 2b a = 3b a = b a = b

larisa [96]

$\\
\text{Consider the equation}\\
\\
7a-2b=5a+b\\
\\
\text{to solve for a, we will first add 2b both sides. so we get}\\
\\
7a-2b+2b=5a+b+2b\\
\\
\Rightarrow 7a=5a+3b\\
\\
\text{now subtract 5a both sides. so we have}\\
\\
7a-5a=3b\\
\\
\Rightarrow 2a=3b\\
\\
\text{divide 2 both sides to get}\\
\\
\Rightarrow a=\frac{3b}{2}$

Hence the value of a is: 3b/2

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3 years ago

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lawyer [7]

I think it’s always cause how can something that’s false be sometimes false or never false

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2 years ago