Решите уравнения: 1) 5 - (x-1.2) = 2+3x 2) 5x-4.5=3x+2.5 3) 2x - (6x-5) = 45

1) 5 - (x-1.2) = 2+3x

5-х+1.2=2+3 х

6.2-х=2+3 х

-х-3 х=2-6.2

-4 х=-4.2

х=1.05

2) 5x-4.5=3x+2.5

5 х-3 х=2.5+4.5

2 х=7

х=7/2 (дробью)

3) 2x - (6x-5) = 45

2 х-6 х+5=45

-4 х+5=45

-4 х=45-5

-4 х=40

х=-10