\(9\left(x+4\right)-25=5\cdot4\)
\(9\left(x+4\right)=20+25\)
\(9\left(x+4\right)=45\)
\(x+4=\frac{45}{9}\)
\(x+4=5\)
\(x=5-4\)
\(x=1\)
\(9.\left(x+4\right)-25=5.4\)
\(9x+9.4=20+25\)
\(9x+36=45\)
\(9x=45-36\)
\(9x=9\)
\(x=9:9\)
\(x=1\)
Vậy \(x=1\)
Tìm x:
9( x + 4 ) - 25 = 5.4
9( x + 4 ) - 25 = 20
9 ( x + 4 ) = 20 + 25
9 (x + 4) = 45
x + 4 = 45 : 9
x + 4 = 5
x = 5 - 4
x = 1
Vậy x = 1 . ^^
9(x-4)-25=5.4
9(x-4)-25=20
9(x-4) =20+25
9(x-4) =45
x-4 =45:9
x-4 =5
x =5+4
x =9
Chúc bạn học tốt
\(9\left(x+4\right)-25=5.4\)
\(9\left(x+4\right)=20+25\)
\(9\left(x+4\right)=45\)
\(x+4=45\div9\)
\(x+4=5\)
\(x=5-4\)
\(x=1\)
Vậy x = 1.
9( x + 4 ) - 25 = 5.4
9x + 36 - 25 = 20
9x + 11 = 20
9x = 20 - 11
9x = 9
x = 9 : 9
x = 1
9( x + 4 ) - 25 = 5.4
9( x + 4 ) - 25 = 20
9( x + 4 ) = 25+25 = 20+25 = 45
x + 4 = 45/9 = 5
x = 5 + 4
x = 9
\(9\cdot\left(x+4\right)-25=5\cdot4\)
\(9x+36-25=20\)
\(9x+36=20+25\)
\(9x+36=45\)
\(9x=45-36\)
\(9x=9\)
\(x=9:9\)
\(x=1\)
Vậy \(x=1\)