mathiscool7 mathiscool7

16-10-2017
Mathematics

contestada

What is the value of ▲ in the equation shown?

7 x 9 = (7 x 10) - (7 x ▲)

=_____

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camronstout camronstout

16-10-2017

I'm changing the triangle to x to make it easier to look at.
63=70-7x
subtract by 70 to get 7x by itself
-7= -7x
Divide by -7 to both sides to get x
▲=1

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