The acceptable row operation when conducting Gaussian Elimination is;
Multiplying an entire row by four
Gaussian Elimination is defined as row reduction, is a method used for solving a system of linear equations.
Now, let us look at the options;
Option A; This option is wrong because multiplying an entire row by zero eliminates the entire equation and as such makes it invalid.
Option B; This statement is not correct because in gaussian eliminiation, we try to make an equation easy to add to another one to eliminate one of the variables. But in this case replacing with reciprocal does not achive that purpose.
Option C; This statement is wrong because we only add or subtract one equation from another and not subtract a number from an equation.
Option D; This statement is correct because it means that by multiplying the entire row by 4, it means we are following the process of trying to make the equation easy to add or subtract from another equation to eliminate one of the variables.
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