How do you solve #x+3=8#?

1 Answer
Kayla
Jul 23, 2016

#color(purple)("x=5#

Explanation:

#color(purple)("Subtract 3 on both sides of the equation. This will allow you to")# #color(purple)("get the variable (a letter that takes the place of an unknown"# #color(purple)("number) and the constant (a number) by themselves so you can solve for x:")#

#xcancel+3=8#
#color(white)(aa)cancel-3 -3#

Now, on the left side you are just left with #x# since 3+(-3) = 0. On the right side you end up with 5 because 8-3 =5.

Thus,

#color(blue)("x=5#

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