Toán Lớp 6: 3.Tìm số nguyên x biết:
a) (-35).x = 280
b) 2.x +39 = -61
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Toán Lớp 6: 3.Tìm số nguyên x biết:
a) (-35).x = 280
b) 2.x +39 = -61
Comments ( 2 )
câu 3
a)
-35.x=280
x=280:(-35)
X=-8
b)
2.x+39=-61
2.x=-61-39
2.x=-100
x=-100:2
X=-50