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Brilliant_brown [7]
4 years ago
8

Please help me. God bless you all

Mathematics
2 answers:
Ivahew [28]4 years ago
6 0

Answer:

x = 11, y = -1/2.

In parentheses the answer is (11, -1/2).

Step-by-step explanation:

x + 4y = 9

x - 2y = 12       Subtract to eliminate the x:

6y = -3

y = -1/2

Substituting in the first equation:

x + 4(-1/2) = 9

x - 2 = 9

x = 11.

Check the results in equation 2:

11 - 2(-1/2)

= 11 + 1

= 12

So it checks out ok.

God bless you too.

Yakvenalex [24]4 years ago
5 0

Answer:

x = 11, y=-½

Step-by-step explanation:

Simultaneous equations - subtract the first equation from the second.

x + 4y = 9

-(x - 2y = 12)

6y = -3

y = -½

Substitute y

x + 4(-½) = 9

x + -2 = 9

x = 11

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