Q: How do you solve 9 equals 4a plus 13?

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-1

8a+4a=144 12a=144 12a/12=144/12 A=144

Add the equations: 4a + 4a - 5b + 5b = 7 + 17 ie 8a = 24 a = 3, so b = 1

3a + 4 = 4a - 3 4 = a -3 (subtract 3a from each side) 7 = a (add 3 to both sides) a = 7

A = 6

Related questions

9a + 4a = 26 13a = 26 a = 26/13 a = 2

Solve the following equation for A : 2A/3 = 8 + 4A

-1

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

4a - 2.1 = 9a + 5.4 4a - 9a = 5.4 +2.1 -5a = 7.5 -a = 1.5 a = -1.5

8a+4a=144 12a=144 12a/12=144/12 A=144

4a - 9 = 27 4a = 36 a = 9

Add the equations: 4a + 4a - 5b + 5b = 7 + 17 ie 8a = 24 a = 3, so b = 1

a + 4 = 10(a + 4) - 4 = 10 - 4a = 6

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

3a + 4 = 4a - 3 4 = a -3 (subtract 3a from each side) 7 = a (add 3 to both sides) a = 7