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3 years ago

5

Solve the system of equations -7x - 6y = 4 x= -3y + 8

1 answer:

Svetradugi [14.3K]3 years ago

7 0

You can use the substitution method for this problem
Since -3y+8=x you can
Use the equation -7(-3y+8) -6y=4
You then distribute and solve
21y-56-6y=4
15y=60
Y=4
You then plug y into one of the original equations
X=-12+8
X=-4
(-4,4)

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The commutative property is a number property where the answer obtained is the same no matter the position of the numbers you are multiplying together.

Commutative property of multiplication is expressed as:

a x b = b x a

a x b x c = a x c x b = b x c x a

Note: " . " in the question also means "x" (multiplication)

Applying commutative property to the question:

(7/15)⋅(−11)⋅(30)

(7/15) ⋅ (−11) ⋅ (30) = (7/15) . (30) . (11)

The values interchanged are: 11 and 30. The result of the multiplication remains unchanged.

Option A is the correct answer.

To learn more, visit the link:

brainly.com/question/24733555

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