\(5x+\left(1+2+3+4\right)=45\)
\(5x+10=45\)
\(5x=35\)
\(x=7\)
Vậy \(x=7\)
\(x+\left(x+1\right)+\left(x+2\right)+\left(x+3\right)+\left(x+4\right)=45\)
\(\Leftrightarrow5x+\left(1+2+3+4\right)=45\)
\(\Leftrightarrow5x+10=450\Rightarrow5x=440\Rightarrow x=88.\)
\(5x+10=45\)
\(5x=35\)
\(x=7\)
x(x+1)+(x+2)+(x+3)+(x+4)=45
=>(x+x+x+x+x)+(1+2+3+4)=45
5x+10=45
5x=45-10
5x=35
x=35:5
x=7
vậy x=7
Chúc các bn hk tốt nha
\(x+\left(x+1\right)+\left(x+2\right)+\left(x+3\right)+\left(x+4\right)=45\)
\(\left(x+x+x+x+x\right)+\left(1+2+3+4\right)=45\)
\(5\times x+10=45\)
\(5\times x=45-10\)
\(5\times x=35\)
\(x=35:5\)
\(x=7\)
~ Hok tốt ~
( x + 1 ) + ( x + 2 ) + ( x + 3 ) + ( x + 4 ) = 45
x + 1 + x + 2 + x + 3 + x + 4 = 45
( x + x + x + x ) + ( 1 + 2 + 3 + 4 ) = 45
4x + 10 = 45
4x = 45 - 10
4x = 35
x = 35 : 4
x = 8,75
Vậy x = 8,75