Step-by-step explanation:
We need to use inverse operations to isolate x by itself.
The inverse of addition is subtraction so we can subtract 2 from both sides
[tex]5x + 2 - 2 = 22 - 2[/tex]
[tex]5x = 20[/tex]
Divison is the inverse of multiplication so we can divide 5 by both sides to find the answer of x.
[tex] \frac{5x}{5} = \frac{20}{5} [/tex]
[tex]x = 4[/tex]
We can plug 4 in for a to verify it
[tex]5(4) + 2 = 22[/tex]
[tex]20 + 2 = 22[/tex]
[tex]22 = 22[/tex]
So it is true.
