Answer:
54
Explanation:
y = 8x + 12 _____(1)
3x - 3y = 6 ______(2)
Substituting the.the expression for y in eqn (1)
into eqn (2).
3x - 3(8x + 12) = 6
3x - 24x - 36 = 6
-21x = 42
x = -2.
y = 8(-2) + 12 = -4.
hence x = -2 and y = -4.
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