math

What is the solution for x + 9 = 21

• 10
• 12
• 11
• 13

Solve for b
2b = -16

• 8
• 4
• -8
• 3

• x = 20
• x = 7
• x = 10
• x = 3

x - 8 = -5 

• 13
• -13
• 3
• -3

Solve for y:
y - 7 = 10

• 17
• -3
• 3
• -17

k+8=15

• k=23
• k=10
• k=7
• k=11

Solve: y + 9.3 = -4.2

• y = -13.5

• y = 13.5

• y = 5.1

• y = -5.1

Solve: -11 = n - 6

• 17 = n

• -17 = n

• 5 = n

• -5 = n

Solve: m + 18 = -8

• m = 26

• m = -26

• m = 10

• m = -10

Solve: -9 = 28 + y

• 37 = y

• -37 = y

• 29 = y

• -29 = y