5. If x= 4 and y=-3 is a solution of 4x = k-3y, then find the value of k.
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Answer:
k = 7
Step-by-step explanation:
we know that,
x = 4
y = -3
4x = k - 3y
4(4) = k - 3(-3)[negative negative become positive]
16 = k + 9
16 - 9 = I
7 = k
recheck,
L.H.S. = 4 × 4
= 16
R.H.S. = 7 - 3(-3)
= 7 + 9 [negative negative beacom positive]
= 16
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