100
solve for a
7a - 2b = 5a + b
a = 2b
a = 3b
a = 3/2b
a=2/3b

Therefore solution for a is

Step-by-step explanation:

Given:

7a - 2b = 5a + b

To Find:

a = ?

Solution:

7a - 2b = 5a + b    .................Given

First take all the 'a' terms to the left hand side and 'b' terms to the right-hand side of the equation,

∴

Now dividing by 2 on both the side we get

∴

Therefore solution for a is

the diameter is 16 cm. are you a teacher?

step-by-step explanation:

-8/2y-8=5/y+4-7y+8/y^2-16

we move all terms to the left:

-8/2y-8-(5/y+4-7y+8/y^2-16)=0

we can not solve this equation