Question

97*12+102x=1980

tìm x

ai rảnh ib với Ngọc ik chán qué:<<

Answer 1

97.12 + 102.x = 1980

1164 + 102.x = 1980

102.x = 816

x = 8

Answer 2

\(1164+102x=1980\)

\(\Leftrightarrow102x=\frac{165}{97}\)

\(\Leftrightarrow x=\frac{165}{\frac{97}{102}}\)

\(x=\frac{55}{3298}\)

Answer 3

Ta có :

97 x 12 + 102x = 1980

1164 + 102x = 1980

102x = 1980 - 1160

102x = 816

x = 816 : 102

x = 8

Hok tốt @_@