How do you solve 7a+10=2a?

2 Answers

leave the a alone

Explanation:

7a + 10 = 2a

10 = 2a - 7a

10 = -5a

10/-5 = a

a=-2

Sep 20, 2016

a = -2

Explanation:

You need all the variables on one side and any numbers on the other side.

7a +10 color(tomato)(-10) color(blue)(-2a) = 2acolor(blue)(-2a)color(tomato)(-10) " "larr subtract 10 and 2a

color(white)(xxxxx.x)7a color(blue)(-2a) = color(tomato)(-10)

color(white)(xxxxxxxx.x)5a = -10

color(white)(xxxxxxxxx.x)a = -2