Subtract 8 from each side: 3a = 33 Divide each side by 3: a = 11
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-12 = 12+12 +12-3a = +12~ ~-3 -3a = -8
When x equals 8, the value of 5x would be 5 times 8, which is 40.
8 raise to 5 equals to 16,777,224
3*5 - 8 = 15-8 = 7
9 - 3a = 8Add 3a to each side:9 = 8 + 3aSubtract 8 from each side:1 = 3aDivide each side by 3:1/3 = a
3a - 1 = ? relation between a & 3 is ( 3 multiplied by a ) since a = 8, then, 3 * 8 = 24 therefore : (3*8)-1=23
-8a + 3a = (-8 + 3)a = (5)a = 5a
8
Should the question read: "In math, a over 5 equals b over 7 equals 8 over 3. Does a plus b equal 31.99?"Do you mean a/5 = b/7 = 8/3?If so, we can look at a and b separately.a/5 = 8/3a = 5*(8/3)a = 40/3a = 13.33b/5 = 8/3b = 7*(8/3)b = 56/3b = 18.67It looks as though you have added a and b together to get 13.33 + 18.67 = 32 (if you did b=18.66 then you would get 31.99 but it should be 32).
If s-5=3 then the value of s is 8 !