17–4x[6–3x (m:4–15)]+95 = 100
17-4×[6–3x (m:4–15)]=5
4×[6–3x (m:4–15)]=12
6–3x (m:4–15)=3
3x (m:4–15)=3
m:4–15=1
m:4=16
m=4
627+4x[63–17– n x3)] = 835
4x[63–(17– n x3)]=208
63–(17– n x3)=52
(17– n x3)=11
n×3=6
n=2
160-477: [5–4:(8- 0 :1)]= 1. asta nu e bun ce ai scris aici
20-[(20+ p :5)x10-10]:10= 0
[(20+ p :5)x10-10]:10=20
(20+ p :5)x10-10=200
(20+ p :5)x10=210
20+ p :5=21
p:5=1
p=5
5+[19x(q: 4)x5+50–1000]: 2 =5
[19x(q: 4)x5+50–1000]: 2=0
19x(q: 4)x5+50–1000=0
19x(q: 4)x5+50=1000
19x(q: 4)x5=950
19x(q: 4)=190
q: 4=10
q=40