Answer:
Multiply first. PEMDAS - Parenthesis, Exponents, Multiplication, Divison, Addition, Subtraction.
Step-by-step explanation:
15 - 8 = 4 x 7
6 = 36
Please give more information on question
Um
81^5=3x
3,486,784,401=3x
x=1,162,261,467
Answer: x = 17 
Step-by-step explanation:
From the question: y α x
⇒ y = kx
y=4 and x = 10 implies
4 = 10k
k = 4/10
k = 2/5
substitute k = 2/5 into the equation
y = 2/5 x
When y = 7 , the equation becomes
7 = 
35 = 2x
35/2 =x
Therefore : 17 
x =