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N76 [4]
3 years ago
15

What is 14x+2y=6 -7x-2y=-13

Mathematics
1 answer:
MissTica3 years ago
5 0
14x+2y=6 (1)
-7x-2y= -13 (2)

Multiply (2) by 2, we have:
-14x-4y= -26 (3)

Take (1)+(3), we can solve and get x= -1, y= 10~


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The triangle has side lengths 10cm, 24cm, and 28cm, is it a right triangle? Explain please i dont understand
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Solve the following equation<br> (7X3+4X2+3X+2) + (2X2+X+5)=
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The way it's written it's 
Simplify the following:
7 X^3 + 4 X^2 + 2 X^2 + 3 X + X + 2 + 5
Grouping like terms, 7 X^3 + 4 X^2 + 2 X^2 + 3 X + X + 2 + 5 = 7 X^3 + (4 X^2 + 2 X^2) + (3 X + X) + (2 + 5):7 X^3 + (4 X^2 + 2 X^2) + (3 X + X) + (2 + 5)
4 X^2 + 2 X^2 = 6 X^2:
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3 X + X = 4 X:
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2 + 5 = 7:Answer:  7 X^3 + 6 X^2 + 4 X + 7
5 0
3 years ago
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