How do you solve equations with like terms

You combine them

Step-by-step explanation:

Take for example 3x+6x=90

3x and 6x are like terms, so you add their coefficients and leave x:

(3+6)x=90 -> 9x=90

Next, you divide both sides by 9 to get x by itself:

(9/9)x=90/9 -> x=10

idk

step-by-step explanation:

use that smart brain

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!