Answer:
hope this helps you get the best answer
Step-by-step explanation:
Addition Property of Equality
We can add the same number to both sides and still keep the equality.
First, we took away three from each side: x+3−3=8−3x+3−3=8−3
Then we were left with five: x=5x=5
The division property of equality states that when we divide both sides of an equation by the same non-zero number, the two sides remain equal.
Multiplication Property of Equality
Stated simply, when you divide or multiply both sides of an equation by the same quantity, you still have equality. ... In the example below the variable is multiplied by 4 , so we will divide both sides by 4 to “undo” the multiplication.
Let x=−7x=−7. Substitute −7−7 for x: 4(−7)?=−284(−7)=?−28
Check your answer: 4x=−284x=−28
Simplify: x=−7x=−7
Subtraction Property of Equality
You can subtract the same number from both sides of an equation and get an equivalent equation.
One expression: 0.75 x 55
another expression: (100% - 25%) x 55
Answer:
The system would be:
4x + 2y = 140
2x + 3y = 150
Step-by-step explanation:
If we represent the cost of sweats by the letter x and the jeans by the letter y, we can then write an equation for each of the situations using the number of each in each situation.
4x + 2y = 140
2x + 3y = 150
Answer:
30 cups/second
Step-by-step explanation:
620 gallons = 9,920 cups
5.5 minutes = 330 seconds
9,920/330 = ~30
