Answer: 3x+7=31
Step-by-step explanation:
Subtract
7
from both sides and then divide both sides by
3
to get
XXXX
x
=
8
Explanation:
With the exception of attempting to divide by zero, if you perform the same basic arithmetic operation (addition, subtraction, multiplication, division) to all terms on both sides of an equation using the same value, the equation remains valid.
So, given
3
x
+
7
=
31
