How do you solve #2.5( 2z + 5) = 5( z / 2.5)#?

1 Answer
Sep 8, 2017

Like So:

Explanation:

...note that #5/2.5 = 2# so,

#2.5(2z + 5) = 2z#

...multipy 2.5 through the parenthesis on the left...

#5z + 12.5 = 2z#

...subtract 2z from both sides...

#3z + 12.5 = 0#

...subtract 12.5 from both sides...

#3z = -12.5#

...divide both sides by 3...

#z = -4.1666...#

GOOD LUCK!