Find a solution for the linear equation 4x + y – 9 = 0 if x = 9
4
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Step-by-step explanation:
4x + y - 9 = 0,
= (4×9) + y - 9 =0,
36+y-9=0,
36+9-y = 0,
45-y = 0,
y = 45+0= 45,
so, 45-45 = 0
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