Solve for x. -3x + 4 = -8 a) x = 4 b) x = -4 c) no solution eliminate d) x = - 4 3

A) x = 4

Step-by-step explanation:

Isolate the x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS (Parenthesis, Exponents (& roots), Multiplication, Division, Addition, Subtraction)

First, subtract 4 from both sides

-3x + 4 = -8

-3x + 4 (-4) = -8 (-4)

-3x = -8 - 4

-3x = -12

Isolate the x. Divide -3 from both sides

(-3x)/-3 = (-12)/-3

x = (-12)/(-3)

Divide. Note that when dividing 2 negative numbers, the answer would be a positive number

x = (-12)/(-3)

x = 4

A) x = 4 is your answer

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Hi there!

A. x=4

Step-by-step explanation:

subtract by 4 both sides of an equation.

-3x+4-4=-8-4

simplify.

-8-4=-12

-3x=-12

divide by -3 both sides of an equation.

-3x/-3=-12/-3

simplify.

-12/-3=4

12/3=4

12/4=3

4*3=12

3*4=12

x=4 and 4=x

Hope this helps!

-Charlie

Have a great day!

step-by-step explanation:

y=mx+b

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: