a ) 2x + 5 = 17
2x = 17 - 5
2x = 12
x = 12 : 2
x = 6
b ) -14 + 3x = 13
3x = 13 - ( -14 )
3x = -27
x = -27 : 3
x = -9
c ) 4x - 13 = -77
4x = ( -77 ) + 13
4x = 64
x = 64 : 4
x = 16
\(a,2x+5=17\)
\(2x=17-5\)
\(2x=12\)
\(x=12:2\)
\(x=6\)
\(b,-14+3x=13\)
\(3x=13+14\)
\(3x=27\)
\(x=27:3\)
\(x=9\)
\(c,4x-13=-77\)
\(4x=-77+13\)
\(4x=-64\)
\(x=-64:4\)
\(x=-16\)
Tìm x
2x - 3 =17
4² - 3x =27.3 -77
48 + 2x = 3.2³
( 13x -12² ) : 5 =5
Tính:
a) 5 + ( -7 ) + 10 + ( -95 ) + (-77)
b) ( -12 ) + ( -13 ) + 17 + 18 + ( -77)
c) 1 + ( -2 ) + 3 + ( -4 ) + ... + ( -99 ) +100
d) ( -10 ) + 11 + ( -12 ) + ( -13 ) + 14 + ( -15 ) + ( -16 ) + 17 + ( - 18 ) + ( - 19 ) + 20
-2x+15 < 3x - 17 < 19 -x
x+(x+1) + (x+2) + (x+3) + ... +13 +14 = 14
25 + 24 + 23 + ... + x + (x-2) + (x-3) = 25
1) 10 -3 ( x -1 ) = -5
2) 3x + 75 = -15
3) 4x - 15 = -75 - x
4) 12 - ( x - 7 ) = -8
5) x + 75 = 15
6) x - 18 = 3x + 4
7) 2x + 18 = 10
8) 26 - 3x = 5
9) x - 12 = -15
10) 24 - 2 ( x + 5 ) = 38
11) 25 - 5 ( 3 - x ) = 15
12) x + ( -17 ) = -14
13) -5x - 13 = 47
14) 2x + 36 = -18
15) 9 . ( x + 7 ) - 12 = 24
Ai giải dùm mình nhanh nhất, đúng mình tick cho nha
bai 1)tim x biet
a )24-(36+5)=x
b)14-21=(13-x)-(15+8)
bai 2) tim x biet
a)17-x=-25+(-16+9)
b)3x-21=-19-(-2x)
tìm x
17x – ( -16x – 37) = 2x +
-2x –3. (x – 17) = 34 – 2(-x + 25
17x + 3. ( -16x – 37) = 2x + 43 - 4x
103 -57: [-2. (2x – 1)2 – (-9)0] = -106
3x – 32 > -5x + 1
15 + 4x < 2x – 145
-3. (2x + 5) -16 < -4. (3 – 2x)
-2x + 15 < 3x – 7 < 19 – x
x + (x+1) + (x+2) + (x+3) + .... + 13 + 14 = 14
25 + 24 + 23 +...+ x + (x - 2) + (x – 3) = 25
13)10+2x=45:43
14)52x-3-2.52=52.3
15)71+(26-3x):5=75
16)x-1&=(-8)-17
A) 7/3x+5 = 9/6x-7
B) 3x+6/4 = 5-7x/6
C) 12/5x+6 = 17/3x+12
D) 6(3x+7) = 12(2x-4)
E) 13(2x-9)= 8(3x-13)
Giải rõ giùm em với
Tìm x
1) 3x=17=12 7)3x+2=9 13)|x|-10=-3
2)|x-1|=0 8)2x+12=3(x-7) 14) -13+x=39
3)(2x-5)+17=6 9)2 .x2 -1=49 15)3x-(-17)=14
4)10-2.(4-3x)=-4 10) x+(-35)=18 16)|x+9|.2=10
5)24:(3x-2)=-3 11) -2x-(-17)=15 17)-6x=18
6)-45:5.(-3-2x)=3 12) 3x-5=-7-13 18) 2x-(-3)=7
