Question

If 3y+ 4- 1 then what is the value of 'y'​

Answer 1

Answer:

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Answer 2

Answer:

To solve the given equation, 2y + 9 = 4, for the variable y, we must first isolate y on one side of the equation. We'll begin isolating y on the left side by subtracting 9 from both sides as follows:

2y + 9 = 4 (Given)

2y + 9 - 9 = 4 - 9

(NOTE: Remember -- What you do to one side of an equation; You must do to the other side in order to maintain the sense of equality and equilibrium)

2y + 0 = -5

2y = -5

Now, divide both sides by 2 in order to finally solve for y:

(2y)/2 = -5/2

(2/2)y = -5/2

(1)y = -5/2

y = -5/2

CHECK (Always perform this step back in the original, given equation):

2y + 9 = 4

2(-5/2) + 9 = 4

(2/2)(-5) + 9 = 4

(1)(-5) + 9 = 4

-5 + 9 = 4

4 = 4

Therefore, y = -5/2 is indeed the correct value for the variable y and thus the solution to the given equation.