Answer:
66
Step-by-step explanation:
Use the combination formula.
Answer:
Obviously condensation
Step-by-step explanation: because it is
Answer:
sorry type it out
Step-by-step explanation:
2x-x-7=0
3x-7=0
add 7 to 7 and 0, so then we cross out 7-7, and then
3x=7, bc u change the subtraction to addition, sr if thst doesn't make sense but 3x=7 is the answer