a+7over 2+a+21over5=0

Answer 1

To solve the equation:

a + 7/2 + a + 21/5 = 0

First, combine like terms:

2a + 7/2 + 21/5 = 0

Next, find a common denominator:

2a + 7/2 + (21/5 * 2/2) = 0

2a + 7/2 + 42/10 = 0

Now, add the fractions:

(2a + 7 + 42) / 10 = 0

Combine like terms:

2a + 49 / 10 = 0

Multiply through by 10 to eliminate the fraction:

10 * (2a + 49 / 10) = 10 * 0

20a + 49 = 0

Subtract 49 from both sides:

20a = -49

Divide both sides by 20:

a = -49/20

Therefore, the solution to the equation is a = -49/20.