-7/8x+3/4=5/8
First you want to clear the fractions by multiplying by the lcd (in this case it's 8): -(7/8x)8+(3/4)8=(5/8)8.... -7X+6=5
Combine like terms: -7x+6-6=5-6..... -7x=-1
Get the unknown alone: -7x/-7=-1/-7..... X=1/7
Check: -7/8(1/7)+3/4=5/8
-1/8+3/4=5/8
-1+6=5
5=5 ✔️
I hope this helps.... I can explain better if you'd like on specific steps :)