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find the value of x if 3x - 20 = 130?
find the value of x if 8x-2=-9+7x?
find the value of x if x + 6 = 33?

Sagot :

Scryt
1.
[tex]3x-20=130[/tex]
[tex]3x=130+20[/tex]
[tex]3x=150[/tex]
[tex]x=50[/tex]

2.
[tex]8x-2=-9+7x[/tex]
[tex]8x-7x=-9+2[/tex]
[tex]x=-7[/tex]

3.
[tex]x+6=33[/tex]
[tex]x=33-6[/tex]
[tex]x=27[/tex]

those tasks are very simple, you should try to solve them on you're own first :)
[tex]3x-20=130\ \ \ /+20\\\\3x-20+20=130+20\\\\3x=150\ \ \ /:3\\\\3x:3=150:3\\\\x=50[/tex]



[tex]8x-2=-9+7x\ \ \ /+2\ \ /-7x\\\\8x-7x=-9+2\\\\x=-7[/tex]



[tex]x+6=33\ \ \ /-6\\\\x=33-6\\\\x=27[/tex]
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