a)Bằng 6
b ) bằng 10 nha bn k mink nha!
a)5x+15=45
5x=30
x=6
b)10x-90=10
10x=100
x=10
a)5x+15=45.
5x=45-15.
5x=30.
x=30:5.
x=6.
b)10x-90=10.
10x=90+10.
10x=100.
x=100:10.
x=10
a) 5x + 15 = 45
5x = 45 - 15
5x = 30
x = 30 : 5
x = 6
b) 10x - 90 = 10
10x = 10 + 90
10x = 100
x = 100 : 10
x = 10
mình nha
a, 5x+15= 45
5x= 45-15
5x= 30
x= 30:5
x= 6
b, 10x- 90= 10
10x= 10+90
10x= 100
x= 100:10
x= 10
a.5x+15=45
5x=45-15
5x=30
x=30:5
x=6
a)5x+15=45
5x =45-15
5x =30
x =30/5
x =6
b)10x -90=10
10x =90+10
10x =100
x =100/10
x =10
5x+15=45
5x=45-15
5x=30
x=30:5
x=6
10x-90=10
10x=10+90
10x=100
x=100:10
x=10