what is substitution method? what is elimination method?What is cross multiplication method?Explain all.....
Answers
Answer:
elimination method is where you actually eliminate one of the variables by adding the two equations. In this way, you eliminate one variable so you can solve for the other variable. In a two-equation system, since you have two variables, eliminating one makes the process of solving for the other quite easy.
Answer:
A way to solve a linear system algebraically is to use the substitution method. The substitution method functions by substituting the one y-value with the other. ... The solution of the linear system is (1, 6). You can use the substitution method even if both equations of the linear system are in standard form.
In the elimination method you either add or subtract the equations to get an equation in one variable. When the coefficients of one variable are opposites you add the equations to eliminate a variable and when the coefficients of one variable are equal you subtract the equations to eliminate a variable.
the method of cross-multiplying means that we multiply the numerator of each (or one) side by the denominator of the other side, effectively crossing the terms over. ... Cross-multiplication is a shortcut, an easily understandable procedure that can be taught to students.