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x-15=5 or 2x+5=1 solve the following system

Sagot :

Answer:

[tex]x-15=15\\2x+15=1\\x=5+15 \\so x=20\\2x=1-5\\2(20)=1-5 = \frac{-4}{2} \\x=-2\\\\[/tex]

Step-by-step explanation:

mendodolker27

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'

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