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PilotLPTM
13 days ago
15

Solve for y 4.2x - 1.4y = 2.1

Mathematics
2 answers:
Zina [3.9K]13 days ago
3 0

Answer:

The expression for y is:

         y=3x-1.5

Step-by-step solution:

We start with the equation involving x and y given as:

4.2x-1.4y=2.1

The goal is to isolate y, expressing it in terms of x and constants.

Subtracting 4.2x from both sides results in:

          -1.4y=2.1-4.2x

Dividing both sides by -1.4 gives:

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

tester [3.9K]13 days ago
3 0
4.2x - 1.4y = 2.1
-1.4y = 2.1 - 4.2x
y = \frac{2.1 - 4.2x}{-1.4}
y = 3x - 1.5 <==
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1. Convert 1/4 into eighths to be able to subtract it from 5/8.

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Step-by-step explanation:

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