Solving equations quick check

Solve for x. x + (–4) + 3x = 2x – 1 + 3

Solve for x. 3x + 3x – 1 = 4x + 9

Solve for x. –2x + 1 + 3(x – 1) = –4 + –x – 2

Solve for x. −4 + 3x − 1 = 2x + 1+ 2x

If I solve this equation 3(4 + x) = x + 6 and I got x=-3, which would be the check that proves my answer correct?

• -3=-3

• 3=3

• 0=0

• the answer isn't correct

Tags

CCSS.6.EE.B.5