Answer:
y = 6
Explanation:
given
- 2y + 7x = 9 ( subtract 7x from both sides )
- 2y = - 7x + 9 ( divide through by - 2 )
y = x + ( simplify )
y = x -
or
y = 3.5x - 4.5
substitute x = 3 into the equation
y = 3.5(3) - 4.5 = 10.5 - 4.5 = 6
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