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nadya68 [22]
3 years ago
8

Which algebraic expression is equivalent to this expression?

Mathematics
2 answers:
liraira [26]3 years ago
8 0

Answer: 16x + 7

Step-by-step explanation:

You just add all "like" terms

mel-nik [20]3 years ago
7 0

Answer:

A. 16x + 7

Step-by-step explanation:

(9x + 9) + (7x - 2)

Add like terms

9x+7x     +9-2

16x   +7

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Answer:

m = -1/2

Step-by-step explanation:

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xxTIMURxx [149]

The solution to given system of equations is (x, y) = (2, -1)

<em><u>Solution:</u></em>

Given system of equations are:

-1x + 2y = -4  -------- eqn 1

4x + 3y = 5 ------- eqn 2

We can solve the above system of equations by elimination method

<em><u>Multiply eqn 1 by 4</u></em>

4(-1x + 2y = -4)

-4x + 8y = -16  ------ eqn 3

<em><u>Add eqn 2 and eqn 3</u></em>

4x + 3y = 5

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( + ) --------------------

0x + 11y = -16 + 5

11y = -11

y = -1

<em><u>Substitute y = -1 in eqn 1</u></em>

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-x = -2

x = 2

<em><u>Check the answer:</u></em>

Substitute x = 2 and y = -1 in eqn 2

4x + 3y = 5

4(2) + 3(-1) = 5

8 - 3 = 5

5 = 5

Thus the obtained answer is correct

Thus the solution to given system of equations is (x, y) = (2, -1)

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