Question

1, 5×(0, 4х+х)+0, 4х+х=70 Как решить?

Answer 1

1,5*(0,4х+х)+0,4х+х=70
0,6х+1,5х+1,4х=70
3,5х=70
х=70:3,5
х=20

Answer 2

$1.5 \times (0.4x + x) + 0.4x + x = 70 \\ \\ 0.6x + 1.5x + 1.4 x = 70 \\ \\ 3.5x = 70 \\ \\ x = 70 \div 3.5 \\ \\ = 20$

Answer 3

Equation Solution

To solve the equation 1 + 5×(0.4x + x) + 0.4x + x = 70, we can follow these steps:

1. Combine like terms. 2. Solve for x.

Step 1: Combine Like Terms

First, let's combine the like terms in the equation:

1 + 5×(0.4x + x) + 0.4x + x = 70

This simplifies to:

1 + 5×(1.4x) + 1.4x + x = 70

Step 2: Solve for x

Now, we can solve for x:

1 + 7×(1.4x) + x = 70

1 + 7×1.4x + x = 70

1 + 9.8x + x = 70

1 + 10.8x = 70

10.8x = 70 - 1

10.8x = 69

x = 69 / 10.8

x ≈ 6.3889

So, the solution to the equation 1 + 5×(0.4x + x) + 0.4x + x = 70 is approximately x ≈ 6.3889.

- Source: ' :1)0,9 - 7,4 = -0,4 + 4,3;2)9 - 7( + 3) = 5 - 6x;3 ...'