4a + a = 25
add 4a and a
5a = 25
then divide 25 by 5
a = 5
Chat with our AI personalities
4a+5=25 4a=25-5 4a=20 a=20/4 a=5
11a+9 = 4a+30 11a-4a = 30-9 7a = 21 Solution: a = 3
4a - 2.1 = 9a + 5.4 4a - 9a = 5.4 +2.1 -5a = 7.5 -a = 1.5 a = -1.5
4a - 9 = 27 4a = 36 a = 9
4a - 5b = 74a +5b = 17From the first equation:4a = 7 + 5bsubstitute this value in the second equation:7 + 5b + 5b = 177 + 10b = 1710b = 10b = 1Now,solve for a :4a - 5(1) = 74a = 7 + 54a = 12a = 3