\(\left(d\right)30-x=200-175\)
\(30-x=25\)
\(x=5\)
\(\left(e\right)5\left(x+12\right)=70\)
\(x+12=14\)
\(x=2\)
tương tự 2 câu trên bạn tự làm câu cuối nhé, mình không ghi lại đề đâu
#quankun^^
d,175+(30-x)=200
(30-x) = 200 - 175
30 - x = 25
x = 30 - 25
x = 5.
e,5(x+12)+22=92
5(x+12) = 92 - 22
5(x+12) = 70
x+12 = 70 : 5
x + 12 = 14
x = 14 - 12
x = 2.
f,95-5(x+2)=45
5(x+2) = 95 - 45
5(x+2)= 50
x + 2 = 50 : 5
x + 2 = 10
x =10 -2
x = 8
Hok tốt !
\(d,175+\left(30-x\right)=200\Leftrightarrow175+30-x=200\Leftrightarrow x=5\)
\(e,5\left(x+12\right)+22=92\Leftrightarrow5x+60+22=92\)
\(\Leftrightarrow5x=10\Leftrightarrow x=2\)
\(f,95-5\left(x+2\right)=45\Leftrightarrow95-5x-10=45\Leftrightarrow5x=40\)\(\Leftrightarrow x=8\)
#Học tốt
d, \(175+\left(30-x\right)=200\)
\(\Rightarrow30-x=25\)
\(\Rightarrow x=5\)
Vậy x = 5
e, \(5\left(x+12\right)+22=92\)
\(\Rightarrow5\left(x+12\right)=70\)
\(\Rightarrow x+12=14\)
\(\Rightarrow x=2\)
Vậy x = 2
f, \(95-5\left(x+2\right)=45\)
\(5\left(x+2\right)=50\)
\(\Rightarrow x+2=10\)
\(\Rightarrow x=8\)
Vậy x = 8
d,(30-x)=25
x=5
e,5(x+2)=70
(x+2)=mười4
x=mười2
f,95-5(x+2)=45
5(x+2)=50
x+2=mười
x=8