Answers:
A: one solution
B: one solution
C: one solution
Step-by-step explanations:
steps for solving a
step 1 collect the like terms
step 2 move variable to the left side and change its sign and move constant to the right side and change its sign
step 3 collect the like terms and add the numbers
steps for solving b
step 1 calculate the sum or difference and collect the like terms
step 2 factor out 4 from the expression
steps for solving c
step 1 eliminate the opposites and calculate the sum or difference