Question

^{giúp mik với ạ}

Answer 1

1) \(x+2=3\Leftrightarrow x=1\)

2) \(x+23=50\Leftrightarrow x=27\)

3) \(33+x=45\Leftrightarrow x=12\)

4) \(15+x=70\Leftrightarrow x=55\)

5) \(61+x=100\Leftrightarrow x=39\)

6) \(x-5=23\Leftrightarrow x=28\)

7) \(x-23=98\Leftrightarrow x=121\)

8) \(435-x=125\Leftrightarrow-x=-310\Leftrightarrow x-310\)

9) \(321-x=50\Leftrightarrow-x=-271\Leftrightarrow x=271\)

10) \(x-87=134\Leftrightarrow x=221\)

Answer 2

1) x + 2 = 3

x = 3 - 2

x = 1

Vậy x = 1

2) x + 23 = 50

x = 50 - 23

x = 27

Vậy x = 27

3) 33 + x = 45

x = 45 - 33

x = 12

Vậy x = 12

4) 15 + x = 70

x = 70 - 15

x = 55

Vậy x = 55

5) 61 + x = 100

x = 100 - 61

x = 39

Vậy x = 39

6) x - 5 = 23

x = 23 + 5

x = 28

Vậy x = 28

7) x - 23 = 98

x = 98 + 23

x = 121

Vậy x = 121

8) 435 - x = 125

x = 435 - 125

x = 310

Vậy x = 310

Answer 3

9) 321 - x = 50

x = 321 - 50

x = 271

Vậy x = 271

10) x - 87 = 134

x = 134 + 87

x = 221

Vậy x = 221

11) x . 9 = 108

x = 108 : 9

x = 12

Vậy x = 12

12) x . 23 = 184

x = 184 : 23

x = 8

Vậy x = 8

13) 5 . x = 35

x = 35 : 5

x = 7

14) x : 3 = 9

x = 9 . 3

x = 27

Vậy x = 27

15) 39 : x = 13

x = 39 : 13

x = 3

Vậy x = 3

 

Answer 4

\(x+2=3\)

\(x=3-2\)

\(x=1\)

\(----------\)

\(x+23=50\)

\(x=50-23\)

\(x=27\)

\(---------\)\(--\)

\(33+x=45\)

\(x=45-33\)

\(x=12\)

\(------------\)

\(15+x=70\)

\(x=70-15\)

\(x= 55\)

\(--------------\)

\(61+x=100\)

\(x=100-61\)

\(x= 39\)

\(--------------\)

\(x-5=23\)

\(x=23+5\)

\(x=28\)

\(-------------\)

\(x-23=98\)

\(x=98+23\)

\(x= 121\)

\(-------------\)

\(435-x=125\)

\(x=435-125\)

\(x= 310\)

\(------------------\)

\(321-x=50\)

\(x=321-50\)

\(x= 271\)

\(----------------\)

\(x.9=108\)

\(x=108:9\)

\(x= 12\)

\(-------------\)

\(x.23=184\)

\(x=184:23\)

\(x= 8\)

\(-----------\)\(---\)

\(5.x=35\)

\(x=35:5\)

\(x=7\)

\(------------------\)

\(x:3=9\)

\(x=9.3\)

\(x=27\)