How do you simplify $-r + 6r - 5(6r -4)$ ?

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Answer 1 · 2015-09-22T05:37:56

$=color(green)(−25r + 20$

$−r+6r−color(green)((5)) * (6r−4)$

$color(green)((5))$ is multiplied with each term within the bracket:

$=−r+6r−color(green)((5)) * (6r) −color(green)((5)) *(-4)$

$=−r+6r−30 r + 20$

$=5r−30 r + 20$

$=color(green)(−25r + 20$

How do you simplify -r + 6r - 5(6r -4)-r + 6r - 5(6r -4)?