Question

1)(2,8-x):0,3=52) 4,2x+8,4=14,73)0,39:x-0,1=0,16

Answer 1

1)(2,8-x):0,3=5 2,8-х=5*0,3 2,8-х=1,5 -х=1,5-2,8 -х=-1,3 Х=1,3  2) 4,2x+8,4=14,7 4,2х=14,7-8,4 4,2х=6,3 Х=6,3:4,2 Х=1,5  3)0,39:x-0,1=0,16 0,39:х=0,16+0,1 0,39:х=0,26 Х=0,39:0,26 Х=1,5

Answer 2

(2,8-х):0,3=5

2,8-х=5*0,3=1,5

х=2,8-1,5=1,3

4,2х+8,4=14,7

4,2х=14,7-8,4

4,2х=6,3

х=6,3:4,2=1,5

0,39:х-0,1=0,16

0,39:х=0,16+0,1=0,26

х=0,39:0,26=1,5

Answer 3

To solve these equations, let's tackle them one by one:

1. (2, 8 - x) : 0.3 = 5

To solve for x, we can follow these steps:

Step 1: Distribute the division operation 2 / 0.3 = 8 - x

Step 2: Solve for x 8 - 2 / 0.3 = x

Step 3: Perform the division and subtraction x = 8 - 6.6667 ≈ 1.3333

So, the value of x in this equation is approximately 1.3333.

2. 4.2x + 8.4 = 14.7

To solve for x, follow these steps:

Step 1: Subtract 8.4 from both sides 4.2x = 14.7 - 8.4 4.2x = 6.3

Step 2: Divide by 4.2 to isolate x x = 6.3 / 4.2 x = 1.5

So, the value of x in this equation is 1.5.

3. 0.39 : x - 0.1 = 0.16

To solve for x, follow these steps:

Step 1: Add 0.1 to both sides to isolate the division term 0.39 : x = 0.16 + 0.1 0.39 : x = 0.26

Step 2: Invert both sides of the equation (since division is the same as multiplying by the reciprocal) x / 0.39 = 1 / 0.26

Step 3: Divide both sides by 0.39 x = 1 / 0.26 * 0.39 x = 1.5

So, the value of x in this equation is 1.5.