(x-15)x7-270:45=169
(x-15) x 7 - 6 = 169
(x - 15 ) x 7 = 169 + 6
( x -15) x 7 = 175
x - 15 = 175 : 7
x - 15 = 25
x = 25 + 15
x = 40
Vậy x = 40
# HOK TỐT #
(x-15) x 7 -270 : 45=169
(x-15) x 7 - 6 =169
(x-15) x 7 = 169+6
(x-15) x 7 = 175
x-15
Xin lỗi viết tiếp nhé
x-15 = 2 5
x=25+15
x=40
(x-15)x7-270:45=169
\(\left(x-15\right).7-6=169\)
\(\left(x-15\right).7=169+6\)
\(\left(x-15\right).7=175\)
\(x-15=175:7\)
\(x-15=25\)
\(x=25+15\)
\(x=40\)
CHÚNG BẠN HỌC TỐT
(x-15)x7-270:45=169
(x-15)x7-6 =169
(x-15)x7 = 169+6
(x-15)x7 =175
(x-15) =175:7
x-15 =25
x =25+15
x =40
Hok tốt!!!!
\(\left(x-15\right)\times7-270\div45=169\)
\(\left(x-15\right)\times7-6=169\)
\(\left(x-15\right)\times7=169+6\)
\(\left(x-15\right)\times7=175\)
\(x-15=175\div7\)
\(x-15=25\)
\(x=25+15\)
\(x=40\)