\(\left(x+9,4\right)\div2,5=70,2\)
\(\left(x+9,4\right)=70,2\times2,5\)
\(x+9,4=175,5\)
\(x=175,5-9,4\)
\(x=166,1\)
( x + 9,4 ) :2, 5=70, 2
x + 9,4 = 70,2 x2,5
x + 9,4 = 175,5
x = 175,5 - 9,4
x = 166,1
\(\left(x+9,4\right)\)\(:2,5=70,2\)
\(x+9,4\) \(=\)\(70,2\)x \(2,5\)
\(x+9,4\) \(=\)\(175,5\)
\(x\) \(=\)\(175,5-9,4\)
\(x\) \(=\)\(166,1\)