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Nitella [24]
3 years ago
15

Solve for y 4.2x - 1.4y = 2.1

Mathematics
2 answers:
NeX [460]3 years ago
3 0
4.2x - 1.4y = 2.1
-1.4y = -4.2x + 2.1
y = (-4.2/-1.4)x + 2.1/-1.4
y = 3x - 1.5 <==
Dima020 [189]3 years ago
3 0
<h2>Answer:</h2>

The value of y is:

         y=3x-1.5

<h2>Step-by-step explanation:</h2>

We are given a equation in terms of variable x and y as follows:

4.2x-1.4y=2.1

Now, we are asked to solve for y i.e. we are asked to find the value of y in terms of x and constant.

Now, we subtract 4.2x on both the sides of the equation to obtain:

          -1.4y=2.1-4.2x

On dividing both side of the equation by (-1.4) we get:

y=\dfrac{2.1}{-1.4}-\dfrac{4.2x}{-1.4}\\\\y=-1.5+3x\\\\i.e.\\\\y=3x-1.5

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