(x+1)+(x+2)+(x+3)+(x+4)+(x+5)=45
<=> x+1+x+2+x+3+x+4+x+5=45
<=> 5x+15=45
<=> 3(x+5)=45
<=> x+5=15
<=> x=10
( x + 1 ) + ( x + 2 ) + ( x + 3 ) + ( x + 4 ) + ( x + 5 ) = 45
5 . x + 1 + 2 + 3 + 4 + 5 = 45
5 . x + 15 = 45
5 . x = 45 - 15
5 . x = 30
x = 30 : 5
x = 6
Vậy x = 6
\(\left(x+1\right)+\left(x+2\right)+\left(x+3\right)+\left(x+4\right)+\left(x+5\right)=45\)
\(\Rightarrow5x+15=45\)
\(\Rightarrow5x=30\)
\(\Rightarrow x=30:5=6\)
#)Giải :
( x + 1 ) + ( x + 2 ) + ( x + 3 ) + ( x + 4 ) + ( x + 5 ) = 45
5x + ( 1 + 2 + 3 + 4 + 5 ) = 45
5x + 15 = 45
5x = 45 - 15
5x = 30
x = 30 : 5
x = 6
#~Will~be~Pens~#
Trả lời :
(x+1)+(x+2)+(x+3)+(x+4)+(x+5)=45
Ta có :
x+1+x+2+x+3+x+4+x+5 = 45
( x+x+x+x+x ) + ( 1+2+3+4+5 ) = 45
X x 5 + 15 = 45
X x 5 = 45 - 15
X x 5 = 30
X = 30 : 5
X = 6
Vậy x = 6
Học tốt
Ta có:
(x+1)+(x+2)+(x+3)+(x+4)+(x+5)=45
=>x+1+x+2+x+3+x+4+x+5=45
=>5x+[(5+1).5:2] =45
=>5x+15=45
=>5x =45-15
=>5x =30
=> x =30:5
=> x =6
Vậy x =6
CHÚC BẠN HỌC TỐT!
\(\left(x+1\right)+\left(x+2\right)+\left(x+3\right)+\left(x+4\right)+\left(x+5\right)=45\)
\(5x+\left(1+2+3+4+5\right)=45\)
\(5x+15=45\)
\(5x=45-15\)
\(5x=30\)
\(x=30:5\)
\(x=6\)
(x+1)+(x+2)+(x+3)+(x+4)+(x+5)=45
=> 5x + ( 1+2+3+4+5 ) = 45
=> 5x + 15 = 45
=> 5x = 45 - 15
=> 5x = 30
=> x = 30 : 5
=> x = 6
Vậy x = 6
(x+1)+(x+2)+(x+3)+(x+4)+(x+5)=45
5x+1+2+3+4+5=45
5x+15=45
5x=0
x=6
hok tốt
chỗ 5x=0 mk ghi thiếu số 3
lẽ ra là 5x=30
hok tốt
( x + 1 ) + ( x + 2 ) + ( x + 3 ) + ( x + 4 ) + ( x + 5 ) = 45
( x + x + x + x + x ) + ( 1 + 2 + 3 + 4 + 5 ) = 45
X x 5 + 15 = 45
X x 5 = 45 - 15 = 30
X = 30 : 5 = 8
~ Hok tốt ~
