Bài 8:
a)2x=15-3 b)28-3x=13
<=>2x=12 <=>3x=28-13
<=>x=6 <=>3x=15
Đ/s:x=6 <=>x=5
c)(x-1954).5=50
<=>x-1954=10
<=>x=1964
d)30.(60-x)=30
<=>60-x=1
<=>x=60-1
<=>x=59
Bài 9:
a)x-183=87
<=>x=270
Vậy x=270
b)(147-x):5=10
<=>147-x=50
<=>x=147-50
<=>x=97
Vạy x=97
Bài 9:
a: Ta có: x-183=87
nên x=87+183
hay x=270
b: Ta có: \(\left(147-x\right):5=10\)
\(\Leftrightarrow147-x=50\)
hay x=97