a)
\(\eqalign{
& x + 527 = 1892 \cr
& x= 1892 – 527 \cr
& x= 1365 \cr} \)
b)
\(\eqalign{
& x – 631 = 361 \cr
& x = 361 + 631 \cr
& x = 992 \cr} \)
c)
\(\eqalign{
& x x 5 = 1085 \cr
& x = 1085:5 \cr
& x = 217 \cr} \)
d)
\(\eqalign{
& x:5 = 187 \cr
& x= 187 x 5 \cr
& x= 935 \cr} \)
Trả lời