\(\Leftrightarrow2x+11=17\)
hay x=3
114-2(2x+11)=80
2.(2x+11)=114-80=34
2x+11=34:2=17
2.x=17-11=6
x=6:2=3
114-2(2x+11)=80
2(2x+11)=114-80
2(2x+11)=34
2x+11 =34:2
2x+11 =17
2x =17-11
2x =6
x =6:2
x =3
Vậy x=3
\(\Leftrightarrow2x+11=17\)
hay x=3
114-2(2x+11)=80
2.(2x+11)=114-80=34
2x+11=34:2=17
2.x=17-11=6
x=6:2=3
114-2(2x+11)=80
2(2x+11)=114-80
2(2x+11)=34
2x+11 =34:2
2x+11 =17
2x =17-11
2x =6
x =6:2
x =3
Vậy x=3
114 –2.(2.x + 11) = 80
114 –2.(2.x + 11) = 80
708-3:(x+3 mu 1)=407
2.x+15=134:2
114-2.(2x+11)=80
12.x-33=3 mu 2. 3 mu3
200-8.(2.x+7)=112
2 mu 4:(x+1)+2=6
2448-(5.x+148)=2. 10 mu 3
125:x+100=125
2.x-138=8.9
145-x=98+32
Giup em giai nhung bài nay ho a
a,210-5(x-11)=200
b,(2x+1):7=2^2+3^2
c,450:[41-(2x-5]=3^2.5
d,(5x-9).7+3=80
a)x-3/7:9/14=7/3
b)(x-1/2):3/11=114
c)(2x+3/8).7/4=-21/32
d)x-x/2=3/57:9/14
mọi ơi giúp mik đi mik cần gấp
3) Tìm x của N biết a) 80 - ( 2 + 2x ) : 2 = 40 b) 11^2 - 121 = 0 c) 5^x+3 - 7 × 5^2 = 5^2 × 18 d) x^10 = x e) x^10 = 1^x g) ( 2x - 15 )^5 = ( 2x - 15 )^3 4) Thực hiện phép tính a) 5^3 ÷ 5^2 + 2^2 × 3 b) 4^3 × 125 - 125 ÷ 5^2 c) 6^2 × 28 + 72 × 6^2 d) 5^6 ÷ 5^4 + 3 × 3^2 - 80 e) 2^3 × 19 - 2^3 × 14 × 1^2021
5/7 . 40/11 - 5/11 . 114/7
Bài 1: Tính
20-19+18-17+...-3+2
Bài 2:Tìm x:
a,|x|.(-7)+7=0
b,-30+3.|8-2x|=-30
c,|1-2x|.4-4:(-2)=22
Bài 3:Tính nhanh:
a,304-(-114+1890)-(303-2020)-114
b,(79-215).225-(-215).(225-79)
a, \(\frac{80}{1\cdot6}+\frac{80}{6\cdot11}+\frac{80}{11\cdot16}+...+\frac{80}{251\cdot256}\)
b, 1.4+2.5+3.6+4.7+...+100.103
c, tìm x:
\(\left(2x-1\right)^2\)=\(\frac{1}{4}\)
Thử trí nha
Nhanh nhất, đúng nhất mk tick cho♥