Question

X+7=18; 8+y=18; a-9=11; b-4=12

Answer 1

Ответ:

1. x+17=18

x=18-17

x=1

2. 8+y=18

y=18-8

y=10

3. a-9=11

a=11+9

a=20

4. b-4=12

b=12+4

b=16

Answer 2

Ответ:

11; 10; 20; 16.

Пошаговое объяснение:

x+7=18

x=18-7

x=11

8+y=18

y=18-8

y=10

a-9=11

a=11+9

a=20

b-4=12

b=12+4

b=16

Answer 3

It looks like you've provided a set of equations. To solve them, let's find the values of the variables X, Y, A, and B:

1. X + 7 = 18: To isolate X, subtract 7 from both sides of the equation: X = 18 - 7 X = 11

2. 8 + Y = 18: To isolate Y, subtract 8 from both sides of the equation: Y = 18 - 8 Y = 10

3. A - 9 = 11: To isolate A, add 9 to both sides of the equation: A = 11 + 9 A = 20

4. B - 4 = 12: To isolate B, add 4 to both sides of the equation: B = 12 + 4 B = 16

So, the solutions to the equations are:

• X = 11
• Y = 10
• A = 20
• B = 16