Question

Помогите!!! 3/7а + 2/5 = 1 а=?

Answer 1

3/7а+2/5=1
3/7а=1-2/5
3/7а=3/5
а=3/5:3/7
а=7/5
а=1 2/ 5
а=1,4

Answer 2

Solving the Equation

To solve the equation 3/7a + 2/5 = 1, we can follow these steps:

1. Subtract 2/5 from both sides of the equation to isolate the term with 'a'. 2. Then, multiply both sides by the reciprocal of 3/7 to solve for 'a'.

Let's solve it step by step.

Step 1: Subtract 2/5 from Both Sides

Subtracting 2/5 from both sides of the equation gives us:

3/7a = 1 - 2/5

Step 2: Simplify the Right Side

To simplify the right side, we can find a common denominator for 1 and 2/5, which is 5. Then, we can rewrite 1 as 5/5 to have a common denominator.

3/7a = 5/5 - 2/5

This simplifies to:

3/7a = 3/5

Step 3: Solve for 'a'

To solve for 'a', we can multiply both sides by the reciprocal of 3/7, which is 7/3.

a = (3/5) * (7/3)

This simplifies to:

a = 7/5

So, the value of 'a' that satisfies the equation 3/7a + 2/5 = 1 is 7/5.