Tìm x :
a) x − 4 = 2
x : 4 = 2
b) x − 5 = 4
x : 5 = 4
c) x − 3 = 3
x : 3 = 3
a)
● x − 4 = 2
x = 2 + 4
x = 6
● x : 4 = 2
x = 2 × 4
x = 8
b)
● x − 5 = 4
x = 4 + 5
x = 9
● x : 5 = 4
x = 4 × 5
x = 20
c)
● x − 3 = 3
x = 3 + 3
x = 6
● x : 3 = 3
x = 3 × 3
x = 9
-- Mod Toán 2
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