2x - 15 = 11 : 11
2x - 15 = 1
2x = 1 + 15
2x = 16
x = 16 : 2
x = 8
\(2x-15\cdot11=11\)
\(\Leftrightarrow2x-165=11\)
\(\Leftrightarrow2x=11+165\)
\(\Leftrightarrow2x=176\)
\(\Leftrightarrow x=176:2\)
\(\Leftrightarrow x=88\)
vậy x=88
2x-15.11=11
2x-165=11
2x=165+11=176
x=176:2=88
2x-15.11=11
2x-165=11
2x=165+11
2x=176
x=176/2
x=88
2x-15.11=11
=> 2x-275=11
=> 2x=11+275
=>2x=286
=>x=143
2x - 15 . 11 = 11
2x - 165 = 11
2x = 11 + 165
2x = 176
x = 176 : 2
x = 88