Tìm x :
a) x + 3 = 6
x × 3 = 6
b) 4 + x = 12
4 × x = 12
a)
● x + 3 = 6
x = 6 − 3
x = 3
● x × 3 = 6
x = 6 : 3
x = 2
b)
● 4 + x = 12
x = 12 − 4
x = 8
● 4 × x = 12
x = 12 : 4
-- Mod Toán 2
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