a,2x+2=12+14
2x+2=26
2x=26-2
2x=24
x=24:2
x=12
Vậy x=12
b,18+3x=12.3
18+3x=36
3x=36-18
3x=18
x=18:3
x=6
Vậy x=6
a, 2x+2=12+14
<=> 2x=12+14-2=24
<=> x=24/2=12
b, 18+3x=12.3
<=> 3x=12.3-18=18
<=> x=18/3=6
m sai chỗ nào ai chỉ hộ với
\(a.\)\(2x+2=12+14=28\)
\(\Rightarrow2x=28-2\Rightarrow2x=26\)
\(\Rightarrow x=13\)
\(b.\)\(18+3x=12.3=36\)
\(\Rightarrow3x=36-18=18\)
\(\Rightarrow x=6\)
Hok Tot
a) 2x+2 = 12+14
=> 2x+2 = 26
=> 2.x = 26-2
=> 2.x = 24
=> x = 24:2
=> x = 12.
Vậy: x = 12.
b) 18+3x = 12.3
=> 18+3x = 36
=> 3.x = 36-18
=> 3.x = 18
=> x = 18:3
=> x = 6.
Vậy: x = 6.
#Học tốt.
\(a,2x+2=12+14\)
\(\Leftrightarrow2x+2=26\)
\(\Leftrightarrow2x=24\)
\(\Rightarrow x=12\)
vậy x= 2
\(b,18+3x=12.3\)
\(\Leftrightarrow18+3x=36\)
\(\Leftrightarrow3x=12\)
\(\Rightarrow x=4\)
Vậy x= 4
Chúc bạn học tốt !
\(36-18=12\)ak? sai rồi nha!
câu b mik nhầm đoạn cuối nhé (xin lỗi bạn nhiều )
\(\Leftrightarrow3x=18\)
\(\Rightarrow6\)
Vậy x=6
2x+2=12+14
2x+2=26
2x=24
x=24:2
x=12
vậy x=12
18+3x=12.3
18+3x=36
3x=36-18
3x=18
x=18:3
x=6
vậy x=6
nếu đúng thì k nhé:)
a,2x+2=12+14 2x+2=26 2x=26-2 2x=24 x=24:2 x=12 b,18+3x=12.3 18+3x=36 3x=36-18 3x=18 x=18:3 x=6 Chúc bạn làm tốt nha !
a, 2x + 2 = 12 + 14
2x + 2 = 26
2x = 26 - 2
2x = 24
x = 24 : 2
x = 12
Vậy x = 12.
b, 18 + 3x = 12 . 3
18 + 3x = 36
3x = 36 - 18
3x = 18
x = 18 : 3
x = 6
Vậy x = 6.
Hok tốt !
a, 2x+2= 12+14 b, 18+3x = 12.3
2(x+1) = 26 (12+6)+3x= 12.3
x+1 = 26/2 12+ 3.2+3x= 12.3
x = 13-1 3.(2+x) = 12.3 -12
x = 12 2+x = 24/3
x = 8-2
x =6
a) 2x + 2 = 12 +14 b) 18+3x=12.3
2x + 2 = 26 18+3x= 36
2x = 26- 2 3x=36-18
2x = 24 3x= 18
x = 24 : 2 x=18:3
x = 12 x= 6
a) 2x + 2 = 12 + 14 b) 18 + 3x = 12.3
2x + 2 = 26 18 + 3x = 36
2x = 26 - 2 3x = 36 - 18
2x = 24 3x = 18
x = 24 : 2 x = 18 : 3
x = 12 x = 6
2x + 2 = 12 + 14
=> 2x + 2 = 28
=> 2x = 28 - 2
=> 2x = 26
=> x = 26 : 2
=> x = 13
a) 2x+2=12+14
=> 2x+2=26
=> 2x=24
=> x= 12
b) 18+3x=12.3
=> 18+3x=36
=> 3x = 18
=> x = 6
~Hok tốt~
__Yu__