Question

ДАЮ 30 БАЛЛОВ. Решите уравнения в столбик, с проверкой: 1)14136:x=2356 2)y:7=305 3)4015:z=803 4)a:2=867

Answer 1

Ответ:

1) 14136/х=2356

14136=2356х

x=14136/2356

х= 6

проверка:

14136/6=2356

2)у/7=305

у=305×7=2135

проверка:

2135/7=305

3)4015/z=803

4015=803z

z=4015/803=5

проверка:

4015/5=803

4)а/2=867

а=867×2=1734

проверка:

1734/2=867

Answer 2

1) 14136 ÷ x = 2356 First, we need to isolate the variable x by multiplying both sides of the equation by x: 14136 = 2356x Now, divide both sides by 2356 to solve for x: x = 14136 ÷ 2356 x = 6

To check, substitute x = 6 back into the original equation: 14136 ÷ 6 = 2356 2356 = 2356 The solution checks out.

2) y ÷ 7 = 305 To solve for y, multiply both sides of the equation by 7: y = 7 * 305 y = 2135

To check, substitute y = 2135 back into the original equation: 2135 ÷ 7 = 305 305 = 305 The solution checks out.

3) 4015 ÷ z = 803 To solve for z, multiply both sides of the equation by z: 4015 = 803z Now, divide both sides by 803 to solve for z: z = 4015 ÷ 803 z = 5

To check, substitute z = 5 back into the original equation: 4015 ÷ 5 = 803 803 = 803 The solution checks out.

4) a ÷ 2 = 867 To solve for a, multiply both sides of the equation by 2: a = 2 * 867 a = 1734

To check, substitute a = 1734 back into the original equation: 1734 ÷ 2 = 867 867 = 867 The solution checks out.