Question

solve the equation (7a/3a+3)-(5/4a-4)=(3a/2a+2)

Answer 1

Is this the equation? \[\frac{ 7a }{ 3a+3 } - \frac{ 5 }{ 4a-4 } = \frac{ 3a }{ 2a+2 }\]

Answer 2

yes

Answer 3

a=3, a=-1/2

Answer 4

can you show me how you got those answers please

Answer 5

multiply 12 both side

Answer 6

take the right term to left and second term on the left to right..

Answer 7

\[\frac{ 28a }{ a+1 } - \frac{ 18a }{ a+1 }=\frac{ 15}{ a-1 }\]

Answer 8

\[\frac{ 10a }{ a+1 } =\frac{ 15}{ a-1 }\]

Answer 9

\[\frac{ 2a }{ a+1 } =\frac{ 3}{ a-1 }\]

Answer 10

\[2a(a-1)=3(a+1) \]

Answer 11

2a^2-2a=3a+3
2a^-5a-3=0
(2a+1)(a-3)=0
a=3
a=-1/2

Answer 12

ok thank you i got it can you help me with this one 1=(1/1-a)+(a/a-1)

Answer 13

i don't understand why you times everything by 12? I get that it's the least common denominator so are you trying to find the least common denominator of the numbers that have a variable after them or what?

Answer 14

yes 12 is the lcm of 2,3,4. you don't need to do that, but this is one way to solve it and it makes our job easier, at least for me..