Mathematically written:
3 * x + 7 = 25
3x + 7 = 25
3x = 25 - 7
3x = 18
x = 18 / 3
x = 6
Proof:
3 * 6 + 7 = 25
18 + 7 = 25
25 = 25 → both sides of the equation are equal, our answer is correct
Notes:
A number - Is an unknown number, called a variable, which in this case is substituted by the letter x.
Hope it helped,
BioTeacher101
Answer:
30cm
Step-by-step explanation:
5+5+12+8
For this one add 35 to the -22 degrees. So the equation is 35+(-22) which would equal 13 degrees F for a high.
B. (4, 4) is a solution to the equation.
