a ) 5(x + 35 ) = 515
x + 35 = 515 : 5
x + 35 = 103
x = 103 - 35
x = 68
a) x+35=515:5
x+35=103
x= 103-35=68
b) 96-3(x+1)=42
3(x+1)=96-42=54
x+1=54:3=18
x=18-1=17
c) 12x-33=32.33
12x - 33 = 9 . 27
12x - 33=243
12x = 243 +33
12x = 276
x= 276:12
x=23
a) 5(x + 35) = 515
=> x + 35 = 103
=> x = 68
b) 96 - 3(x + 1) = 42
=> 3(x + 1) = 54
=> x + 1 = 18
=> x = 17
c) 12x - 33 = 32 . 33
=> 3(4x - 11) = 35
=> 4x - 11 = 34
=> 4x - 11 = 81
=> 4x = 92
=> x = 23
5( x + 35 ) = 515
x + 35 = 515 : 5
x + 35 = 103
x = 103 - 35
x = 68
b) 96 - 3( x + 1 ) = 42
- 3( x + 1 ) = 42 - 96
- 3 ( x + 1 ) = -46
x + 1 = -46
a, 5(x+35)=515 b, 96 - 3(x+1) = 42 c, 12x - 33 = 9 . 27
(x+35)=515:5 3(x+1) = 96-42 12x -33 = 243
x+35 = 103 3(x+1) = 54 12x = 243 + 33
x = 103 - 35 x+1 = 54:3 12x = 276
x = 68 x+1 = 18 x = 276:12
x = 23
Tìm x :
a, 5( x + 35 ) = 515
x + 35 = 515 : 5
x + 35 = 103
x = 103 - 35
x = 68
b, 96 - 3( x + 1 ) = 42
3( x + 1 ) = 96 - 42
3( x + 1 ) = 54
x + 1 = 54 : 3
x + 1 = 18
x = 18 - 1
x = 17
c) 12x - 33 = 32 . 33
12x - 33 = 32+3
12x - 33 = 35
12x - 33 = 243
12x = 243 + 33
12x = 276
x = 276 : 12
x = 23
a) (x+35)=515:5
(x+35)=103
x=103-35=68
b) 3(x+1)=96-42
3(x+1)=54
x+1=54:3
x+1=16
x=16-1=15
c) 12x-33=3=9x27
12x-33=243
12x=243+33
12x=276
x=276:12=23
a, 5( x + 35 ) = 515
x + 35 = 515 : 5
x + 35 = 103
x = 103 - 35
x = 68
b, 96 - 3( x + 1 ) = 42
3( x + 1 ) = 96 - 42
3( x + 1 ) = 54
x + 1 = 54 : 3
x + 1 = 18
x = 18 - 1
x = 17
c, 12x - 33 = 32 . 33
12x - 33 = 243
12x = 243 + 33
12x = 276
x = 276 : 12
x = 23
ai tk cho mình thì mình tk lại !
a/5(x+35)=515
x+35=515:5
x+35=103
x =103-35
x =68
b/96-3(x+1)=42
3(x+1)=96-42
3(x+1)=54
(x+1)= 54:3
(x+1)= 18
x = 18-1
x =17
c/12x-33=32. 33
12x-33 = 243
12x = 243+33
12x =276
x = 276:12
x =23
a,5(x +35)=515 b,96 - 3(x+1)=42
x+35=515 : 5 3(x+1)=96 - 42
x+35=103 3(x+1)= 54
x=103-35 x+1=54:3
x=68 x+1=18
x=18 - 1
x=17
c,12x - 33 = 32.33
12x - 33= 35
12x - 33= 243
12x = 243+33
12x =276
x=276 : 12
x=23
