3 years ago

What is 4.5b + 9 = 90

2 answers:

4 0

Easy

just remember

you can do ANYTHING to an equaiton as long as you do it to both sides

try to get place holder by itself

4.5b+9=90
minus 90 from both sides
4.5b+9-9=90-9
4.5b+0=81
4.5b=81
either divide both sides by 4.5 or double 4.5 to get rid of the decimal
I will double
double both sides
9b=162
divid both sides by 9
b=18

Tresset [83]3 years ago

4 0

4.5(18)+9=90
81+9=90
so b=18

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Schach [20]

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