25abbykalis 25abbykalis

29-11-2021
Mathematics

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Given: 8x - 3y= -21, 3x + y = -10; prove x= -3

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cheunglucas09 cheunglucas09

29-11-2021

8x-3y=-21
3x+y=-10

Substitute the value of y
8x-3y=-21
y=-10-3x

8x-3(-10-3x)=-21

x=-3

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