Question

ПОМОГИТЕ ДАЮ 42 БАЛА!!!!СРОЧНО!!!!​

Answer 1

Ответ:

Пошаговое объяснение:

а) 3х+2=7

3х=7-2

3х=5

Х=5/3

Х=1 2/3

Б) 4х*3=12

4х=12/3

4х=4

Х=4/4

Х=1

В) х(-3+2)=1

Х*(-1)=1

Х=1/(-1)

Х=-1

Г) (х-2)*122=0

122х-244=0

122х=244

Х=244/122

Х=2

Д) (х+4)*(485-179)=0

(х+4)*306=0

Х+4=0/306

Х+4=0

Х=0-4

Х=-4

Е) 3+9х=5х-1

9х-5х=-1-3

4х=-4

Х=-4/4

Х=-1

Ж) 2,5*(4-6х)=-5

4-6х=-5/2,5

4-6х=-2

-6х=-2-4

-6х=-6

Х=-6/-6

Х=1

Answer 2

$3x + 2= 7 \\ 3x = 7 - 2 \\ 3x = 5 \\ x = \frac{5}{3} \\ x = 1 \frac{2}{3}$

$4x \times 3 = 12 \\ 12x = 12 \\ x = 12 \div 12 \\ x = 1$

$x( - 3 + 2) = 1 \\ - x = 1 \\ x = - 1$

$(x - 2) \times 122 = 0 \\ x - 2 = 0 \\ x = 2$

$(x + 4) \times (485 - 179) = 0 \\ x + 4 = 0 \\ x = - 4$

$3 + 9x = 5x - 1 \\ 9x - 5x = - 1 - 3 \\ 4x = - 4 \\ x = - 4 \div 4 \\ x = - 1$

$2.5 \times( 4 - 6x) = - 5 \\ 4 - 6x = - 5 \div 2.5 \\ 4 - 6x = - 2 \\ 6x = 4 + 2 \\ 6x = 6 \\ x = 6 \div 6 \\ x = 1$