Adding and Subtraction Equations

How do I solve?

x + 4 = 6

• Add 6 on both sides

• Subtract 6

• Subtract 4 on both sides of the equal sign

• Add 4 on both sides of the equal sign

What is the best way to solve for "y"?

4 = y + 3

• Subtract 3 on both sides of the equal sign

• Add 4 on both sides

• Subtract 4 on one side of the equal sign

• Divide

Which equation shows that Levi and David have 386 cards together. If Davide has 221 cards how many cards does Levi have?

• 221 + c = 386

• 386 + 221 = c

• c - 386 = 221

• 221 - c = 386

Solve the equation.

x + 345 = 536

• x = 191

• x = 881

x + 3 = 5

− 3 + 3

x = 8

Is this problem done correctly? If not why?

• No because they should have subtracted 3 on both sides

• No because they should have subtract 5 on one side

• Yes everything is correct

How do I solve

t - 7 = 2

• Add 7 on both sides of the equal sign

• Subtract 7 on both sides of the equal sign

• Add 2 on both sides of the equal sign

• Subtract 2 on both sides of the equal sign

What is the best way to solve for "y"?

y - 1.1 = 2.3

• Add 1.1 and 2.3

• Subtract 1.1 and 2.3

• Subtract 2.3 and 1.1

• Add 2 and one then multiply 1 and 3

Which equation shows

15 is 6 less than a number

• x - 6 =15

• 15 - x = 6

• x + 15 = 6

• x + 6 = 15

Solve the equation

b - 3.2 = 4.5

• b = 7.7

• b = 1.3

c - 4 = 5

+ 4 + 4

c = 9

Was this problem done correctly? If not why?

• Yes it was done correctly

• No they should have subtracted 5

• No they should have added 5

• No they should have subtracted 4