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.
-4m = 24 m = -6
The system is simultaneous linear equations
-2x = -4x + 24 -2x + 4x = 24 2x = 24 x = 24/2 x = 12
Numbers have factors. Monomials and polynomials can have factors. Equations don't have factors.
28+28=56
6 doubled plus 6 doubled, first you answer 6 doubled twice, then add the answers
Roughly speaking, to get a unique solution - or at least, a limited number of solutions - if you have 3 variables, you need 3 equations, not just 2. With the two equations, you can get a relationship between the three variables, but not a unique value for a, b, and c. To get the general relationship, solve both equations for "c", replace one in the other, and solve the resulting equation for "a" to get the relationship between the variables "a" and "b". Then, for any valid combination of values for "a" and "b", use the simpler of the original equations (a + b + c = 24) to get the corresponding value for "c".
24
49
One dozen equals 12. Two dozen equals 24.
16
The solution of the system of the two equations, 4x - y = 33 and 5y = 24 may be found by first solving the second equation for y: y = 24/5. then substituting this value into the first equation to produce 4x - (24/5) = 33, or x = [33 + (24/5)]/4 = [(189/5)/4] = (189/20).