Can someone help me with this pls

x = -3

Step-by-step explanation:

7x + 8 = 3x - 4

4x + 8 = - 4

4x = -12

x = -3

X=-3

Step-by-step explanation:

Subtract 8 from both sides of the equation.

7x+8=3x-4

7x+8-8=3x-4-8

Subtract the numbers.

7x=3x-12

Subtract 3x from both sides of the equation.

7x=3x-12

7x-3x=3x-12-3x

Combine like terms.

4x=-12

4x/4=-12/4

Cancel terms that are in both the numerator and denominator, then divide the numbers.

X=-3

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:

94

step-by-step explanation:

average the numbers and use a variable to figure out the minimum to get a 90.

(79+94+91+92+x)/5=90

x = 94