Question

0.8(х-3.2)=56 1.32х-2.3+0.78х=1.9

Answer 1

Ответ:

Пошаговое объяснение:

0.8х-2.56=56

0.8х=56+2.56

0.8х=58.56

х=73.2

1.32х-2.3+0.78х=1.9

1.32х+0.78х=1.9+2.3

2.1х=4.2

х=2

Answer 2

Ответ:

x = 73,2

Пошаговое объяснение:

Answer 3

To solve the equations, let's simplify and solve them step by step.

Equation 1: 0.8(x - 3.2) = 56

First, distribute the 0.8 to the terms inside the parentheses:

0.8x - 0.8 * 3.2 = 56

0.8x - 2.56 = 56

Next, isolate the variable by adding 2.56 to both sides:

0.8x = 56 + 2.56

0.8x = 58.56

Finally, divide both sides by 0.8 to solve for x:

x = 58.56 / 0.8

x ≈ 73.2

So, the solution to equation 1 is x ≈ 73.2.

Equation 2: 1.32x - 2.3 + 0.78x = 1.9

Combine like terms on the left side:

1.32x + 0.78x - 2.3 = 1.9

2.1x - 2.3 = 1.9

Next, isolate the variable by adding 2.3 to both sides:

2.1x = 1.9 + 2.3

2.1x = 4.2

Finally, divide both sides by 2.1 to solve for x:

x = 4.2 / 2.1

x = 2

So, the solution to equation 2 is x = 2.

Therefore, the solutions to the given equations are x ≈ 73.2 and x = 2.