Answer:
x = 20 or x = -2
Step-by-step explanation:
x-15 = 5
or, x=15+5
or, x = 20
2x+5 = 1
or, 2x= 1 - 5
or, x= -4/2
or, x= -2
if you know the rules here then its really easy to solve
the rules are
when + goes to the other side then it become - and viceversa
when × goes to the other side then it becomes ÷ and vice versa
and we did the same thing here
in x - 15 = 5
when '-15' went to the other side it became '+15' and we just solved it
in 2x + 5 = 1
when '+5' went to the other side it became '-5'
and then when 2 in '2x' went to the other side it became ÷2 because there is multiplication in bet
ween 2 and x in '2x'
