2a/3=8+4a2a=3(8+4a) 2a=24+12a -10a=24 a=-24/10 a=-12/5
4a+5=25 4a=25-5 4a=20 a=20/4 a=5
4a + a = 25 add 4a and a 5a = 25 then divide 25 by 5 a = 5
11a+9 = 4a+30 11a-4a = 30-9 7a = 21 Solution: a = 3
12a
2a/3=8+4a2a=3(8+4a) 2a=24+12a -10a=24 a=-24/10 a=-12/5
2A/3 = 8 + 4A multiply by 3 both sides 2A = 24 + 12A subtract 2A to both sides 0 = 24 + 10A subtract 24 to both sides -24 = 10A divide by 10 both sides -24/10 = A -2.4 = A
555
-1
It can do, for the right value of A
10
4a+3-a =12 4a-a = 12-3 3a = 9 a = 3
4a+5=25 4a=25-5 4a=20 a=20/4 a=5
4a + a = 25 add 4a and a 5a = 25 then divide 25 by 5 a = 5
9=4a+13 9-13=4a -4=4a -4/4=a -1=a a=-1
11a+9 = 4a+30 11a-4a = 30-9 7a = 21 Solution: a = 3
A = 6