Answer:
3(C + 5) = 7
Step-by-step explanation:
Let C = unknown number
The <u>sum</u> of a <u>number and 5</u>:
C + 5
<u>Three times</u> the sum of a number and 5:
3(C + 5)
Three times the sum of a number and 5 <u>is 7</u>:
3(C + 5) = 7
<u>To solve</u>
Use the distributive law: a(b + c) = ab + ac
⇒ 3C + 15 = 7
Subtract 15 from both sides:
⇒ 3C = -8
Divide both sides by 3:
⇒ C = -8/3
Well any number you add can be irrational need more information.
Answer:
Step-by-step explanation:
A = 48/20
B = 20/48
Step-by-step explanation:i think you have to divide then mulitiply
Realizing that the mental barriers of being scared to be wrong or too slow were getting in the way and stopping his kids from even attempting to solve problems, Gallin decided to change his approach.