Question

СРОЧНОпжж 2/7a+2/4=1

Answer 1

Ответ:

$\frac{2}{7} a + \frac{2}{4} = 1 \\ \\ a = \frac{7}{4}$

Answer 2

To solve the equation, let's find a common denominator for the fractions first. The common denominator for 7a and 4 is 28a. So, we need to rewrite the fractions with the common denominator:

2/7a + 2/4 = 1

To rewrite the fractions with a common denominator of 28a, we need to multiply the first fraction by 4/4 and the second fraction by 7a/7a:

(2 * 4)/(7a * 4) + (2 * 7a)/(4 * 7a) = 1

Now, simplify the fractions:

(8)/(28a) + (14a)/(28a) = 1

Combine the fractions:

(8 + 14a)/(28a) = 1

To get rid of the denominator, we can multiply both sides of the equation by 28a:

28a * (8 + 14a)/(28a) = 1 * 28a

Simplify:

8 + 14a = 28a

Now, isolate the variable 'a' on one side of the equation:

8 = 28a - 14a

8 = 14a

Now, divide by 14 to solve for 'a':

a = 8/14

a = 4/7

So, the solution to the equation is a = 4/7.