12
12+1.5a = 3a 12 = 3a-1.5a 12 = 1.5a Divide both sides by 1.5 to find the value of a: a = 8
3a + 2b = (3*6) + (2*5) = 18 + 10 = 283a+2b= (3x6)+(2x5)= 18+10=28
If 3a+5=5a+3, then: 3a+5 - 3a = 5a+3 - 3a 5=2a+3 5 - 3=2a+3 - 3 2=2a a=1
-3a-12 = 12+12 +12-3a = +12~ ~-3 -3a = -8
If a + b = 6, what is the value of 3a + 3b?
3a-9 = 6 3a = 6+9 3a = 15 a = 15/3 a = 5 Substitute a = 5 into 4a-1. 4a-1 =4(5)-1 =20-1 =19 Therefore, the value of 4a-1 is 19.
12
3a = 1a = 1/3 (a third)
The value of a is -7
12
10
If: -3a-1 = -15 Then: a = 4 and 2/3
1
a = 14/3
1/3=a
12