87:(4х+5) 17*(3х-16)=85 9*(6х-13)=153 (19х+62):15=13
(4х+5)=87:3 (3х-16)=85:17 (6х-13)=153:9 (19х+62)=13*5
(4х+5)=29 (3х-16)=5 (6х-13)=17 (19х+62)=195
4х=29-5 3х=5+16 6х=17+13 19х=195-62
4х=24 3х=21 6х=30 19х=133
х=24:4 х=21:3 х=30:6 х=133:19
х=6 х=7 х=5 х=7
87:(4*6)=3 17*(3*7)=85 9*(6*5)=153 (19*7+62):15=13
3=3 85=85 153=153 13=13
4 незнаю
1) 6 * 35 = 6* (5*7) = 210
2) 5 * 18 = 5* (2*9) = 90
3) 15 * 12 = 15* (4*3) = 180
4) 8 * 25 = 8* (5*5) = 200
A(-2;-4),B(2;4)
M(x;y)-середина АВ
x=(-2+2)/2=0
y=(-4+4)/2=0
M(0;0)