решите уравнение 1) 3-5х=0 2) 8х-5=х-40 3) 7t+21=t-3 4) 9+13y=35+26y 5) 6x+(3x_2)=14 6) 8y-(7y-142)=51 7) (6x+1)-(3-2x)=14 8) (6-2x)+4=-5x-3
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5х=3
х=3/5
2) 8х-5=х-40
8х-х=5-40
7х=-35
х=-5
3) 3т+21=т-3
3т-т=-3-21
2т=-24
т=-12
4) 9+13у=35+26у
19-35=26у-13у
-26=13у
у=-2
5) 6x+(3x-2)=14
6х+3х-2=14
6х+3х=14+2
9х=16
х=16/9
х=1 5/9
6) 8y-(7y-142)=51
8у-7у+142=51
8у-7у=51-142
у=-91
7) (6x+1)-(3-2x)=14
6х+1-3+2х=14
6х+2х=14-1+3
8х=16
х=2
8) (6-2x)+4=-5x-3
6-2х+4=-5х-3
-2х+5х=-3-6-4
3х=-13
х=-13/3
х=-4 1/3
-5x=-3
x=3/5
2) 7x=5-40
x=-35÷7
x=-5
3)6t=-3-21
6t=-24
t=-24÷6
t=-4
4)-13y=35-9
-13y=26
y=-2
5) 6x+3x-2=14
9x-2=14
9x=14+2
9x=16
x=16÷9
x=1 7/9
6) 8y-7y+142=51
y+142=51
y=51-142
y=-91
7) 6x+1-3+2x=14
8x-2=14
8x=16
x=16÷8
x=2
8) 6-2x+4=-5x-3
10-2x=-5x-3
5x-2x=-10-3
3x=-13
x=-13÷3
x=-4 1/3