Tìm x?
a) x + 2143 = 4465
b) x - 2143 = 4465
c) x : 2 = 2403
d) x × 3 = 6963
a) x + 2143 = 4465
x = 4465 – 2143
x = 2322
b) x – 2143 = 4465
x = 4465 + 2143
x = 6608
c) x : 2 = 2403
x = 2403 × 2
x = 4806
d) x × 3 = 6963
x = 6963 : 3
x = 2321
-- Mod Toán lớp 3
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