is it a, b,c or d i need help with these please i have alot of lessons to do!!


Answer:
Francis did make an error. He should add 2x to both sides of the equation.
5x = 10
Step-by-step explanation:
3x = 10 − 2x
To cancel the minus 2x, Francis should add 2x.
3x + 2x = 10 − 2x + 2x
5x = 10