[tex]3(2x + 4y - 2z) + 7(x + y - 4z)[/tex]
Remove parenthesis.
Distribute 3 and 7 through the parenthesis
[tex] = 6x + 12y - 6z + 7x + 7y - 28z[/tex]
Collect the like terms by adding their coefficients.
[tex] = 13x + 12y - 6z + 7y - 28z[/tex]
Collect the like terms by adding their coefficients.
[tex] = 13x + 19y - 6z - 28z[/tex]
Collect like terms by calculating the sum or difference of their coefficients. Use addition and subtraction rules to calculate the expression.
[tex] = 13x + 19y - 34z[/tex]
