qsn :7x+3y=m
3y=m-7x
y= (m-7x)/3
y = m/3 - 7x/3
The permutation method is an algebraic method for solving simultaneous linear equations. As the word indicates, this method replaces the value of a variable in one equation with another.
The first step in the replacement method is to find the value of one variable in the equation for the other variable. For example, if you have two equations x + y = 7 and x-y = 8, you can see from the first equation that x = 7-y.
The replacement method involves three steps: Solve the equation for one of the variables. Substitute this equation into another equation and solve it. Substitute the value into the original equation to find the corresponding variable
learn more about the substitution method here:https://brainly.com/question/22340165
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