4b - 1 = -4 + 4b + 3
first, simplify and add together what you can.
4b - 1 = -1 + 4b
4b = 4b
because 4b is always equal to 4b, the answer is infinite.
-86
identity.
5b = 21 + 4b 5b - 4b = 21 + 4b - 4b b = 21
4b + 3 = 15 First, Subtract 3 from both sides. -3 -3 4b = 12 Then, divide by 4 to get b by itself. 4 4 b = 3
2a-6a-a=b+4b-4b -5a=5b-4b -5a=1b a=-5 b=1
-4b+2 = 18 -4b = 18-2 -4b = 16 b = -4
36 -20 = 16
The best plan for that particular equation would be to first subtract 15 from each side, and then apply the quadratic formula.
The answer to 6b plus 7 times 5-4b plus 1 equals 38. This is taught in math.
Since b2 is doubled by adding 3, b2 equals 3. 1/2 of that is b, hence b=1-1/2.
2
I ask my 11 year old son. 2b + 18 = 4b Subtract 2b form each side: 18 = 2b Divide each side by 2: 9 = b which is the same as b = 9, but you knew that, didn't you?