How do you solve #15= - d + 20#?
1 Answer
Explanation:
Subtract
#15 - 20 = - d + 20 - 20#
#-5=-d#
You then can multiply both sides by
#-5 * (-1) = -d * (-1)#
#5=d#
The other way to do this is to add
#15+d=20#
and then subtract
#5=d#
Either way, both of these work.