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gulaghasi [49]
3 years ago
10

5x + 2y = 1 , y = -x + 2

Mathematics
1 answer:
dezoksy [38]3 years ago
4 0
Hello.

For the first one its 
<span>x = -0.2 + -0.4y

</span>Move all terms containing x to the left, all other terms to the right.

  Add '-2y' to each side of the equation

. 5x + 2y + -2y = -1 + -2y Combine like terms: 2y + -2y = 0 5x + 0 = -1 + -2y 5x = -1 + -2y

 Divide each side by '5'. x = -0.2 + -0.4y

For the second its 
<span>x=<span><span>−y</span>+2</span></span>


Step 1: Flip the equation.<span><span><span>−x</span>+2</span>=y


</span>Step 2: Add -2 to both sides.<span><span><span><span>−x</span>+2</span>+<span>−2</span></span>=<span>y+<span>−2</span></span></span><span><span>−x</span>=<span>y−2


</span></span>Step 3: Divide both sides by -1.<span><span><span>−x</span><span>−1</span></span>=<span><span>y−2</span><span>−1</span></span></span><span>x=<span><span>−y</span>+2</span></span>

Have a nice day

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3 years ago
Add <br> (x - 10) + (3x + 6)
Ipatiy [6.2K]

Answer:

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your welcomeee

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2 years ago
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Answer:

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Find the LCM

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We get

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2/5 + 0.75

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Find the LCM

The LCM is 20

Thus

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Convert the decimal to fraction

1.75 = 7/4

Thus we get

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Find the LCM

The LCM is 12

Thus

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Convert the decimal to fraction

2.125 = 17/8

Thus

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Find the LCM

the LCM is 40

Thus

3/10 + 17/8 = ( 3(4) + 17(5))/40

= 12 + 85/40

= 97 /40 or 2 17/40

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