How do you solve the equations 22=7-3a?

Apr 6, 2018

color(magenta)(a=-5

Explanation:

$22 = 7 - 3 a$

Adding $- 7$ to both sides:

$- 3 a + \cancel{7} - \cancel{7} = 22 - 7$

$- 3 a = 15$

$\frac{- \cancel{3} a}{\cancel{3}} = \frac{15}{3}$

$- a = 5$

color(magenta)(a=-5

~Hope this helps! :)