a) \(\left(x-53\right)-125=0\)
\(\Leftrightarrow x-53=125\)
\(\Leftrightarrow x=178\)
b) \(135-\left(x+37\right)=80\)
\(\Leftrightarrow x+37=55\)
\(\Leftrightarrow x=18\)
c) \(321+\left(225-x\right)=421\)
\(\Leftrightarrow225-x=100\)
\(\Leftrightarrow x=125\)
d) \(\left(x-36\right):18=12\)
\(\Leftrightarrow x-36=216\)
\(\Leftrightarrow x=252\)
e) \(x-36:18=12\)
\(\Leftrightarrow x-2=12\)
\(\Leftrightarrow x=14\)
\(a.\left(x-53\right)-125=0\)
=>\(x-53=0+125\)
=>\(x-53=125\)
=>\(x=125+53\)
=>\(x=178\)
\(b.135-\left(x+37\right)=80\)
=> \(x+37=135-80\)
=>\(x+37=55\)
=>\(x=55-37\)
=>\(x=18\)
\(c.321+\left(225-x\right)=421\)
=>\(225-x=421-321\)
=>\(225-x=100\)
=>\(x=225-100\)
=>\(x=125\)
\(d.\left(x-36\right):18=12\)
=>\(x-36=12x18\)
=>\(x-36=216\)
=>\(x=216+36\)
=>\(x=252\)
\(e.x-36:18=12\)
=>\(x-2=12\)
=>\(x=12+2\)
=>\(x=14\)
ban oi minh nghi cau e, lam the nay:
e,x-36:18=12
x-36=12.18
x-36=216
x=216+36
x=225
ban thu lai may tinh nhe
a. (x - 53) - 125 = 0
a. (x - 53) = 0 + 125 = 125
a. x = 125 + 53 = 178
b. 135 - (x + 37) = 80
b. (x + 37) = 135 - 80 = 55
b. x = 55 - 37 = 18
c. 321 + ( 225 - x) = 421
c. (225 - x) = 421 - 321 = 100
c. x = 255 - 100 = 125
d. (x - 36) : 18 = 12
d. (x - 36) = 12 * 18 = 216
d. x = 216 + 36 = 252
e. x - 36 : 18 = 12
e. x - 2 = 12
e. x = 12 + 2 = 14
k đúng cho mình nha!
