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forsale [732]
3 years ago
6

4x-7y=-8 and 3x+2y=-6 solve for x and y

Mathematics
1 answer:
Mariulka [41]3 years ago
6 0

Step-by-step explanation:

4x-7y= -8

or, 4x= 7y-8

or, x = <u>7</u><u>y</u><u>-</u><u>8</u> ...........(i)

4

3x+ 2y =-6

or, 3x= -(2y+6)

or, x= -<u>(</u><u>2</u><u>y</u><u>+</u><u>6</u><u>)</u><u> </u>........... (ii)

3

from (i) and (ii),

<u>7</u><u>y</u><u>-</u><u>8</u> = <u>-</u><u>(</u><u>2</u><u>y</u><u>+</u><u>6</u><u>)</u>

4 3

or, 21y-24 = -8y-24

or,

y = <u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>

<u>then</u><u> </u><u>,</u><u> </u><u>Let's</u><u> </u><u>put</u><u> the</u><u> </u><u>value</u><u> of</u><u> </u><u>y </u><u>in </u><u>(</u><u>i</u><u>)</u><u> </u><u>or </u><u>(</u><u>ii)</u><u> </u>

x = <u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>

<em>sorry</em><em> </em><em>I'm</em><em> </em><em>tired</em>

<em>so,</em><em> </em><em>i</em><em> </em><em>can't</em><em> </em><em>complete</em><em> </em><em>this</em>

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