Please answer asap please

Question

I need help with the following questions 

I think I would number at seven then multiply for my answer is 80 what was my number.

  A x +28 =80 

  B 4(x+7)=80

  c 4x +7=80

  D 4x+ 28=80 

 

 

Simplify the expression with the following 

a=5

b=2

c=3

d= 4

5b*d² -3a divided by six 

 

What are ways to say 7x _ 18 =18 

 

 

 

Answer 1

Question 1

 

A) x + 28 = 80

 

Subtract 28 on both sides of equation.

 

x = 52

 

 

B) 4(x+7)=80

 

Divide both sides of equation by 4.

 

x + 7 = 20

 

Subtract 7 on both sides or equation.

 

x = 13

 

 

C) 4x + 7=80

 

Subtract 7 on both sides of equation.

 

4x = 73

 

Divide both sides of equation by 4.

 

x = 18.25

 

 

D) 4x+ 28 = 80 

 

 

Subtract 28 on both sides of equation.

 

4x = 52

 

Divide both sides of equation by 4.

 

x = 13

 

 

Question 2

 

Substitute the known variables into the expression. Do not forget to use PEMDAS.

 

[5(2)*(4²) - 3(5)] / 6

 

 

First perform parentheses and exponents.

 

[5(2) * 16 - 3(5)] / 6

 

 

Next is multiplication from left to right.

 

[10 * 16 - 15] / 6

 

 

Simplify what is in brackets.

 

(160 - 15) / 6 =

 

145 / 6

 

 

Ways to say 7x - 18 = 18:

 

1)  Subtract 18 on both sides of equation.

 

7x - 36 = 0