Question

730-х=400-70650+х=870-19х∙ (25:5)=60;(24∙3):х=6;х: (17∙2)=2;k+124 : 4 = 465​

Answer 1

Ответ:

1)400

2)201

3)14

4)12

5)68

6)434

1)730-х=400-70

730-х=330

х=730-330

х=400

2)650+х=870-19

650+х=851

х=851-650

х=201

3)х*(25:5)=60

х*5=60

х=60:5

х=14

4)(24*3):х=6

72:х=6

х=72:6

х=12

5)х:(17*2)=2

х:34=2

х=34*2

х=68

6)к+124:4=465

к+31=465

к=465-31

к=434

Answer 2

Let's solve each equation step by step:

1. 730 - x = 400 To solve for x, we need to isolate it on one side of the equation: x = 730 - 400 x = 330

2. 70650 + x = 870 - 19x To solve for x, we need to simplify the equation: Add 19x to both sides to get the x terms on one side: 70650 + x + 19x = 870 Combine like terms: 20x + 70650 = 870 Subtract 70650 from both sides: 20x = 870 - 70650 20x = -69780 Divide both sides by 20 to solve for x: x = -69780 / 20 x = -3489

3. (25/5) * x = 60 Simplify the left side of the equation: (5 * x) = 60 Now, divide both sides by 5 to solve for x: 5x = 60 x = 60 / 5 x = 12

4. (24 * 3) / x = 6 Simplify the left side of the equation: (72) / x = 6 To solve for x, multiply both sides by x: 72 = 6x Divide both sides by 6 to solve for x: x = 72 / 6 x = 12

5. x / (17 * 2) = 2 Simplify the denominator: x / 34 = 2 To solve for x, multiply both sides by 34: x = 2 * 34 x = 68

6. k + 124 / 4 = 465 First, simplify the left side by dividing 124 by 4: k + 31 = 465 Now, isolate k by subtracting 31 from both sides: k = 465 - 31 k = 434

So, the solutions to the equations are:

1. x = 330
2. x = -3489
3. x = 12
4. x = 12
5. x = 68
6. k = 434