x=4
Step-by-step explanation:
4(-6+5x)=24+8x
open the bracket
-24+20x=24+8x
collect like terms
20x-8x=24+24
12x=48
divide both sides by 12
12x/12 = 48/12
x= 4
-7+7n=2(-7+7n)
open the brackets
-7+7n=-14+14n
collect like terms
14n-7n=-14+7
7n=-7
divide through by 7
n=-1