Đáp án:
-332
Giải thích các bước giải:
X+19x18+10= 20
X + 19 x 18 = 20-10
X+19x18 = 10
X+342=10
x = 10 - 342
x = -332
ủa lớp 4 hok số âm rồi à
x+19x18+10= 20
x + 19 x 18 =20-10
x+19x18 =10
x+342=10
x =10 -342
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