Question

Solve the simultaneous equation 4x +5y =0, 8x - 15y = 5

Answer 1

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Answer 2

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▶️4x + 5y = 0 -------(i)
▶️8x - 15y = 5 ----------(ii)
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USING SUBSTITUTION METHOD :

From equation (i)
4x + 5y = 0.
x = -5y/4---------(iii)

PUTTING x = -5y/4 in equation (ii)
8x - 15y = 5
8(-5y/4) - 15y = 5
-40y/4 - 15y = 5
-10y - 15y = 5
-25y = 5
y = -1/5

PUTTING y = -1/5 in equation (iii)
x = -5y /4
x = - 5×(-1/5) /4
x = 1/4

So, The value of x is 1/4 & y is -1/5✔✔
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