How do you solve #8.4m - 7= 7.4m - 7#?

1 Answer
smendyka
Mar 11, 2017

See the entire solution process below:

Explanation:

Add #color(red)(7)# and subtract #color(blue)(7.4m)# from each side of the equation to solve for #m# while keeping the equation balanced:

#8.4m - 7 + color(red)(7) - color(blue)(7.4m) = 7.4m - 7 + color(red)(7) - color(blue)(7.4m)#

#8.4m - color(blue)(7.4m) - 7 + color(red)(7) = 7.4m - color(blue)(7.4m) - 7 + color(red)(7)#

#1m - 0 = 0 - 0#

#1m = 0#

#m = 0#

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