Question

1.3(х-0.6)=1.8х 3(2х-1)+7=5(х-1)+7 решите столбиком пж

Answer 1

Відповідь наа фото........

Answer 2

Объяснение:

1.3(х-0.6)=1.8х

1.3х-0.78=1.8х

1.3х-1.8х=0.78

0.5х=0.78

х=0.78/0.5

х=1.56

3(2х-1)+7=5(х-1)+7

6х-3+7=5х-5+7

6х+4=5х+2

6х-5х=2-4

х=-2

Answer 3

Sure, let's solve each equation step-by-step:

1. 1.3(x - 0.6) = 1.8x

Expand the equation:

1.3x - 1.3(0.6) = 1.8x

Now, calculate 1.3(0.6):

1.3 * 0.6 = 0.78

The equation becomes:

1.3x - 0.78 = 1.8x

Now, move the x terms to one side and the constant terms to the other side:

1.3x - 1.8x = 0.78

Combine like terms:

-0.5x = 0.78

Now, solve for x:

x = 0.78 / -0.5

x = -1.56

2. 3(2x - 1) + 7 = 5(x - 1) + 7

Expand the equation:

6x - 3 + 7 = 5x - 5 + 7

Combine like terms:

6x + 4 = 5x + 2

Now, move the x terms to one side and the constant terms to the other side:

6x - 5x = 2 - 4

Combine like terms:

x = -2

So the solutions to the equations are:

1. x = -1.56

2. x = -2