100 x - 0,87 ( 19,3 + 3,7 ) = 0
Solve for x
x=0,2001
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100x-0,87\times 23=0
Add 19,3 and 3,7 to get 23.
100x-20,01=0
Multiply 0,87 and 23 to get 20,01.
100x=20,01
Add 20,01 to both sides. Anything plus zero gives itself.
x=\frac{20,01}{100}
Divide both sides by 100.
x=\frac{2001}{10000}
Expand \frac{20,01}{100} by multiplying both numerator and the denominator by 100.
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