tìm xϵz :
a)15 - ( x - 7 ) = -21
b) 3x + 17 = 2
c) 45 - ( x - 9 ) = -35
d)(-5) + x = 15
e) 2x - (-17) = 15
g) | x - 2 | = 3
Loga
Toán lớp 6
tìm xϵz :
a)15 - ( x - 7 ) = -21
b) 3x + 17 = 2
c) 45 - ( x - 9 ) = -35
d)(-5) + x = 15
e) 2x - (-17) = 15
g) | x - 2 | = 3
