Solve the equation. Don't forget to first simplify each side of the equation, if possible.
-4a + 3 + 5a = 12 - 21
-36
-12
36
12
combine all like terms. so you are left with 3+a= -9 then you subtract 3 from both sides and you are left with a= -12
first off add -4a to 5a which gives you a
then subract 12 from 21 which gives you -9
then bring the three on the other side of the equal sign which makes the 3 negative. so now the equation looks like:
a = -9 - 3
which equals -12
so a = -12
combine like terms first.
-4a+3-5a=12-21
-9a+3= -9 add -3 to both sides
-9a+3-3= -9-3
-9a= -12 divide by -9 on both sides
a=12/9 or 4/3
-4a +3 + 5a = 12 - 21
a = -12
-4a+3+5a=12-21
3+a=-9
a=-9-3
a=-12
Comments
combine all like terms. so you are left with 3+a= -9 then you subtract 3 from both sides and you are left with a= -12
-4a + 3 + 5a = 12 - 21
first off add -4a to 5a which gives you a
then subract 12 from 21 which gives you -9
then bring the three on the other side of the equal sign which makes the 3 negative. so now the equation looks like:
a = -9 - 3
which equals -12
so a = -12
combine like terms first.
-4a+3-5a=12-21
-9a+3= -9 add -3 to both sides
-9a+3-3= -9-3
-9a= -12 divide by -9 on both sides
a=12/9 or 4/3
-4a +3 + 5a = 12 - 21
a = -12
-4a+3+5a=12-21
3+a=-9
a=-9-3
a=-12