Уравнения
1) 100 + 11х = -8х + 5
2) 5 (2z-6) = 6z - 14
3) 4(10 - 5y) - 4 = 0
4) 4 + 3t = 8t - t
1. 11х+8х=5-100 19х=-95 х=-5
1) 100+11х=-8х+5
100-5=-8х-11х
95=-19х
19х=-95
х=-95/19
х=-5
2) 5(2z-6)=6z-14
10z-30=6z-14
10z-6z=-14+30
4z=16
z=16|4
z=4
3)4(10-5y)-4=0
40-20y-4=0
38=20y
y=38/20
y=1.9
4)4+3t=8t-t
4=10t
t=4\10
t=0.4
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Answers & Comments
1. 11х+8х=5-100 19х=-95 х=-5
1) 100+11х=-8х+5
100-5=-8х-11х
95=-19х
19х=-95
х=-95/19
х=-5
2) 5(2z-6)=6z-14
10z-30=6z-14
10z-6z=-14+30
4z=16
z=16|4
z=4
3)4(10-5y)-4=0
40-20y-4=0
38=20y
y=38/20
y=1.9
4)4+3t=8t-t
4=10t
t=4\10
t=0.4