Chapter 7 linear equaTionS 203- 0.015x − 0.01 = 0.025x + 0.2
Multiply both sides by 10^3 = 1000.
1000 0 015 001 1000 0 025 02
1000 0 015(. .) (. .)
(. )xx
x−= +
− 11000001 1000 0 025 100002
15 10 25 20(.)(=+.) (.)
−= +x
xx 00
15 15
10 10 200
200 200
210 10
210
10−−
−= +
−−
−=−=xx
xxx−−= 21 x- 0.24(2x − 3) + 0.08 = 0.6(x + 8) − 1
Multiply both sides by 10^2 = 100.
1000242 3008 10006 81
1000242[. ().] [.()]
[. (xx
x−+ =+−
−−+ 3 100008 =+ 10006 8 − 1001
100024)] (.)[.( )] ()
[(.)]x
(()[(. )]( )
() ()238 10006 8 100
24238608xx
xx−+=+−
−+=+−−
−+=+−100
48 xx 72 860 480 100
48 64 60 380
48 48
64 12 380
380 380
444 1xx
xx
x−= +
−−
−= +
−−
−= 22
444
12
37xxx−=−=