Answer:
-9
Step-by-step explanation:
Step 1 : Put like terms together
x + 9 = 21 + 3x - 4 + 10
Subtract 3x on both sides
-2x + 9 = 21 - 4 + 10
Subtract 9 on both sides
-2x = 21 - 4 + 10 - 9
Simplify
-2x = 18
Step 2 : Divide
= 
x = -9
Answer: 18+54
Step-by-step explanation:
6*3=18 and 6*9=54
Answer:
x=60
Step-by-step explanation:
Answer:
Mathematical is a term which means "Relating to mathematics."
<em>Sentence for better understanding</em><em> </em><em>-</em><em> </em>Physics is totally mathematical.
<h3>Hope it helps! : ) </h3>
Answer:
180
Step-by-step explanation:
90 x 2 =180 hope this helps :)