Question

NEED ASAP!!! WILL MARK BRAINLLIEST!!!!!! A student solved the equation 7x - 5 - 5x = 15 and found x = 5. What is the student's error?

Answer 1

the student messed up at the point of adding 5 to I5, they subtracted instead and got 2x=I0 which would mean x=5. when instead they should've added 5 and got 2x=20 and got x=I0