Реши уравнения:

0,8x-3,5=-1,2+0,5

1,3 (t-0,6) = 1,8t

3x-4+2x=6+2x-4

50-7y-16=3y-16

1) 0.8x-3.5=-1.2+0.5

0.8x-3.5=-0.7

0.8x = - 0.7+3.5

0.8x = 2.8

x=3.5

2) 1.3 (t-0.6) = 1.8t

1.3t - 0.78=1.8t

1.3t - 1.8t = 0.78

-0.5t = 0.78

t = - 1.56

3) 3x-4+2x=6+2x-4

4x=6

x=2

4) 50-7y-16=3y-16

50-7y=3y

-7y-3y=-50

-10y = - 50

y=5

0,8x-3,5=-1,2+0,5

0,8x=-1,2+0,5+3,5

0,8x=2,8

x=2,8:0,8

x=28:8

x=3,5

1,3 (t-0,6) = 1,8t

1,3t-0,78=1,8t

-0,78=1,8t-1,3t

-0,78=0,5t

t=-0,78:0,5

t=-7,8:5

t=-1,56

3x-4+2x=6+2x-4

3x+2x-2x=6-4+4

3x=6

x=6:3

x=2

50-7y-16=3y-16

50-16+16=3y+7y

50=10y

y=50:10

y=5