Answer:
$14
Step-by-step explanation:
80% of $70 is $14, saving him $56
Answer:
l/b=a
Step-by-step explanation:
Answer:
im not so sure which one it is
Step-by-step explanation:
Δ<<span>0 i think this is right</span>
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