a)50 + x = 180 - 120
50 + x = 60
x = 60-50
x = 10
b)20-x = 150-140
20-x = 10
x = 20-10
x = 10
c) 25+x = 100-40
25+x=60
x= 60-25
x=35
d) 100+x =130-25
100+x = 105
x = 105-100
x = 5
e) 143+x = 174-22
143+x = 152
x = 152-143
x = 9
ỦNG HỘ MK NHÁ
120 + ( 50 + x ) = 180
50 + x = 180 - 120
50 + x = 60
x = 60 - 50
x = 10
140 + ( 20 - x ) = 150
20 - x = 150 - 140
20 - x = 10
x = 20 - 10
x = 10
100 - ( 25 + x ) = 40
25 + x = 100 - 40
25 + x = 60
x = 60 - 25
x = 35
130 - ( 100 + x ) = 25
100 + x = 130 - 25
100 + x = 105
x = 105 - 100
x = 5
174 - ( 143 + x ) = 22
143 + x = 174 - 22
143 + x = 152
x = 152 - 143
x = 9
k mk nha
Thanks nhìu
\(120+\left(50+x\right)=180\)
\(\Rightarrow50+x=180-120\)
\(\Rightarrow50+x=60\)
\(\Rightarrow x=60-50=10\)
Vậy x = 10
\(140+\left(20-x\right)=150\)
\(\Rightarrow20-x=150-140\)
\(\Rightarrow20-x=10\)
\(\Rightarrow x=20-10=10\)
Vậy x =x10
\(100-\left(25+x\right)=40\)
\(\Rightarrow25+x=100-40\)
\(\Rightarrow25+x=60\)
\(\Rightarrow x=60-25=35\)
Vậy x = 35
\(130-\left(100+x\right)=25\)
\(\Rightarrow100+x=130-25\)
\(\Rightarrow100+x=105\)
\(\Rightarrow x=105-100=5\)
Vậy x = 5
\(174-\left(143+x\right)=22\)
\(\Rightarrow143+x=174-22\)
\(\Rightarrow143+x=152\)
\(\Rightarrow x=152-143=9\)
Vậy x = 9
10,10,35,5,9 nha bạn