a) 6x : 3 - 5 = 41
2x - 5 = 41
2x = 41 + 5
2x = 46
x = 46 : 2
x = 23
b) 1 000 000 000 : x = 500
x = 1 000 000 000 : 500
x = 2 000 000
\(a)6x:3-5=41\)
\(\Rightarrow6x:3=46\)
\(\Rightarrow6x=138\)
\(\Rightarrow x=23\)
\(b)1000000000:x=500\)
\(\Rightarrow x=1000000000:500\)
\(\Rightarrow x=20000000\)
a,6x:3-5=41 6x:3=41+5=46 6x=46x3=138 x=138:6=23 b,1000000000:x=500 x=1000000000:500=2000000
\(\text{Xin lỗi, mình nhầm câu b) Kết quả là 2000000 mới đúng}\)
b) 1000000000 : x = 500
x = 1000000000 : 500
x = 2000000
a) 6x : 3 - 5 = 4
6x : 3 = 41 + 5
6x : 3 = 46
6x = 46 . 3 ( " . " là nhân )
6x = 138
=> x = 138 : 6
=> x = 23
b) 1000000000 : x = 500
=> x = 1000000000 : 500
=> x = 2000000