Divide both sides by -3: b = 24/(-3) = -8
The second equation is not complete and there is not sufficient information for a solution. It would make no sense for me to guess what a + b equals since, in that case, I may as well start posting my own questions and answering them!
12
It isn't always. In fact, it almost never is. The only time it is is when 'b' is 22/3 .
-7+3b = 4b-8 3b-4b = -8+7 -b = -1 b = 1
Divide both sides by -3: b = 24/(-3) = -8
If B equals 8, then the equation is: 20-8=? The answer is 12.
b = -3.15 is.
The second equation is not complete and there is not sufficient information for a solution. It would make no sense for me to guess what a + b equals since, in that case, I may as well start posting my own questions and answering them!
Factors are (b - 2)(b - 2) so only solution is 2
12
It isn't always. In fact, it almost never is. The only time it is is when 'b' is 22/3 .
-7+3b = 4b-8 3b-4b = -8+7 -b = -1 b = 1
For a value to be a solution to an equation, when you substitute the value for the variable, the equation becomes true. 4+B=6 B is the variable. 2 is the solution Substitute 2 for B 4+2=6 The equation is true.
To find the solution to this equation, you need to rearrange the terms and solve for the variable. 4 = 2b + b^2 can be rewritten as b^2 + 2b - 4 = 0. You can then solve this quadratic equation by factoring, completing the square, or using the quadratic formula.
B/4+8 = -42Multiply all terms in the equation by 4 to eliminate the denominator:B+32 = -168Move 32 to the RHS of the equation which now becomes -32:B = -168-32B = -200Check that your answer is correct by substituting the value of B into the original equation.
To do b equals 2.4 in two step equations, we need to first isolate the variable b on one side of the equation. To do this, we can undo any operations that have been applied to b. For example, if we had the equation 4b = 9.6, we can divide both sides by 4 to get b = 2.4. Similarly, if we had the equation 4b - 8 = 9.6, we can add 8 to both sides of the equation, then divide both sides by 4 to get b = 2.4. Once we have isolated the variable b on one side of the equation, we can set it equal to 2.4 to solve the equation.