Question

I will medal!!
What is the solution to the equation -2(1+5a)=-6(a+3) ?

a =

Answer 1

first expand the 2 parentheses

Answer 2

-2*2 -2*5a = -6*a - 6*3
can you continue?

Answer 3

-14a=-24a

Answer 4

@welshfella

Answer 5

no you can only add/subtract like terms
-4 -10a cannot be subtracted as one is a number and the other is a term in a

Answer 6

-4 - 10a = -6a - 18
the next thing to do is to add 6a to both sides of the equation so as to get the 2 terms in a on the left side

Answer 7

- 4 - 10a = - 6a - 18
+6a +6a

Answer 8

what does that give us?

Answer 9

-6a + 6a = ?

Answer 10

0

Answer 11

right so that gets rid of the -6a on the right side of our equation
so we have
- 4a -10a + 6a = -18

Answer 12

sorry thats
-4 - 10a + 6a = -18
-4 - 4a = -18

now to isolate -4a we have to add 4 to each side of the equation

Answer 13

what will that give us?

add 4 to left side and add 4 to the right side

Answer 14

4a =-14

Answer 15

almost
there is a - in front of the 4a

-4 + 4 - 4a = -18 + 4
-4a = -14

Answer 16

now you divide both sides by -4 so that we get a only on left side.
this way we get the solution. The value of a.