6,2 * (3-2 х) = 20 - (12,4 х+1,4)

Выражение: 6.2 * (3-2*x) = 20 - (12.4*x+1.4)

Ответ: 0=0

Решаем по действиям:

1. 6.2 * (3-2*x) = 18.6-12.4*x

6.2 * (3-2*x) = 6.2*3-6.2*2*x

1.1. 6.2*3~~18.6

X6.2

_ _3_ _

18.6

1.2. 6.2*2=12.4

X6.2

_ _2_ _

12.4

2. 18.6-20=-1.4

-20.0

_1_8_._6_

-01.4

3. - 12.4*x+12.4*x=0

4. - 1.4+1.4=0

-1.4

_1_._4_

0.0

Решаем по шагам:

1. 18.6-12.4*x-20+12.4*x+1.4=0

1.1. 6.2 * (3-2*x) = 18.6-12.4*x

6.2 * (3-2*x) = 6.2*3-6.2*2*x

1.1.1. 6.2*3~~18.6

X6.2

_ _3_ _

18.6

1.1.2. 6.2*2=12.4

X6.2

_ _2_ _

12.4

2. - 1.4-12.4*x+12.4*x+1.4=0

2.1. 18.6-20=-1.4

-20.0

_1_8_._6_

-01.4

3. - 1.4+1.4=0

3.1. - 12.4*x+12.4*x=0

4. 0=0

4.1. - 1.4+1.4=0

-1.4

_1_._4_

0.0