What is th evalue of x when y = 7
2
-3x +4y-1=0
-3x+4y-1=0
+1 +1
-3x+4y=1
-28 -28
-3x=-27
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-3x -3x
x=9
-3x +4y-1=0
-3x + 4(7) - 1 = 0
-3x = -27
x = 9
To find the value of x when y = 7, we can substitute the given value of y into the equation and solve for x.
Given equation: -3x + 4y - 1 = 0
Substitute y = 7: -3x + 4(7) - 1 = 0
Simplify the equation: -3x + 28 - 1 = 0
Combine like terms: -3x + 27 = 0
Now, we can isolate the variable x.
Add 3x to both sides of the equation: -3x + 3x + 27 = 0 + 3x
Simplify: 27 = 3x
Divide both sides by 3 to solve for x: 27/3 = 3x/3
Simplify: 9 = x
Therefore, when y = 7, the value of x is 9.