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?
-86
The expression 18 plus 6 plus 4b simplifies to 24 + 4b.
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
-86
-4b+2 = 18 -4b = 18-2 -4b = 16 b = -4
4b - 1 = -4 + 4b + 3first, simplify and add together what you can.4b - 1 = -1 + 4b4b = 4bbecause 4b is always equal to 4b, the answer is infinite.
The expression 18 plus 6 plus 4b simplifies to 24 + 4b.
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
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.
Since b2 is doubled by adding 3, b2 equals 3. 1/2 of that is b, hence b=1-1/2.
The answer to 6b plus 7 times 5-4b plus 1 equals 38. This is taught in math.