that is true
Step-by-step explanation:
3×3x = 9x
3×7= 21
So 9x + 21
because you cant add a variable to a number that doesnt have the same variablem
Answer:
All real numbers make this equation true, so it is true.
Step-by-step explanation:
3(3x+7)=9x+21 if I were to input 3 as x on both sides, it would equal 48 on each side.
It essentially becomes 3(9+7)=27+21
then 3(16)=48
48+48
This is true for all variables, so the equation must be true
