Answer:
30
Step-by-step explanation:
hope it helps
Answer:
x is 10.
Step-by-step explanation:
3x + 12 = 42
<em>Subtract 12 from both sides</em>
3x = 42 - 12
<em>Subtract 12 from 42 to get 30</em>
3x = 30
<em>Divide both sides by 3</em>
x = 30/3
<em>Divide 30 by 3 to get 10</em>
x = 10
Multiply it again so it equals that 310 number
Answer:
5´12
Step-by-step explanation:
same base 5
9+3=12
5'12
I think the number is 290.
*There's 2 hundreds
*9 is 9 more than 0