A/ X + 3 = 15 B/ 9 + X = 15 C/ X – 14 = 37 D/ 89 – X = 67 E/ X + 39 =...
Bài 7: Câu 3: Tìm x :
a/ x + 3 = 15
b/ 9 + x = 15
c/ x – 14 = 37 d/ 89 – x = 67
e/ x + 39 = 60
f/ 48 + x = 65
g/ x – 34 = 29 h/ 73 – x = 45
Bài 7: Câu 3: Tìm x :
a/ x + 3 = 15
b/ 9 + x = 15
c/ x – 14 = 37 d/ 89 – x = 67
e/ x + 39 = 60
f/ 48 + x = 65
g/ x – 34 = 29 h/ 73 – x = 45