Toán Lớp 6: 3x+5=14
5x-35=45
60-3.(x-3) =45
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Toán Lớp 6: 3x+5=14
5x-35=45
60-3.(x-3) =45
Tính hộ với
Comments ( 2 )
3x+5=14
3x = 14 -5
3x = 9
x = 9: 3
x = 3
5x-35=45
5x = 45 + 35
5x = 80
x = 80 : 5
x = 16
60-3.(x-3) =45
3.(x-3) = 60 – 45
3.(x-3) = 15
x-3 = 15 : 3
x-3 = 5
x = 5+3
x = 8
3x+5=14
3x=14-5
3x=9
x=9:3
x=3
b, 5x-35=45
5x=45+35
5x=80
x=80:5
x=16
c, 60-3.(x-3)=45
3.(x-3)=60-45
3.(x-3)=15
x-3=15:3
x-3=5
x=5+3
x=8