Question

3/5y - 2=7/10 please tell me the answer

Answer 1

y = 2/9
hope this will help you

Answer 2

Answer:

Required solution of the given equation is $\frac{2}{9}$

Step-by-step explanation:

Given,

3/5y - 2=7/10

We want to find value of y.

Now,

3/5y - 2=7/10

$\frac{3}{5y} - 2 = \frac{7}{10}$

$\frac{3}{5y} = \frac{7}{10} + 2 \\ \frac{3}{5y} = \frac{7 + 2 \times 10}{10} \\ \frac{3}{5y} = \frac{7 + 20}{10} \\ \frac{3}{5y} = \frac{27}{10}$

By cross multiplication,

$5y \times 27 = 10 \times 3 \\ y = \frac{10 \times 3}{5 \times 27} \\ y = \frac{2}{9}$

So, required value of y is $\frac{2}{9}$

This is a problem of Algebra.

Some important Algebra formulas.

(a + b)² = a² + 2ab + b²

(a − b)² = a² − 2ab − b²

(a + b)³ = a³ + 3a²b + 3ab² + b³

(a - b)³ = a³ - 3a²b + 3ab² - b³

a³ + b³ = (a + b)³ − 3ab(a + b)

a³ - b³ = (a -b)³ + 3ab(a - b)

a² − b² = (a + b)(a − b)

a² + b² = (a + b)² − 2ab

a² + b² = (a − b)² + 2ab

a³ − b³ = (a − b)(a² + ab + b²)

a³ + b³ = (a + b)(a² − ab + b²)

Know more about Algebra,

1) https://brainly.in/question/13024124

2) https://brainly.in/question/1169549

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