Let's write that as an equation.
x-8=4x+7
So, you must solve for x by putting all of x on one side then solving for the value of one x.
x-8=4x+7
-8=3x+7
-15=3x
-5=x
Check your work.
(-5)-8=4(-5)+7
-13=-13
Answer:
2825.4227689325 millimeters2
Step-by-step explanation:
sorry if wrong!
Well to simplify 8/10 you divide by 2 for both numbers on top and bottom like this 8/10 divided by 2 would equal to 4/5 the answer will be 4/5
y = 6 - 3x
x + y = 62
Since we already know the value of y, we can use substitution to find the value of x.
x + 6 - 3x = 62
<em><u>Subtract 6 from both sides.</u></em>
x - 3x = 56
<em><u>Combine like terms.</u></em>
-2x = 56
<em><u>Divide both sides by -2</u></em>
x = -28
Now that we know the value of x, we can solve for the value of y.
x + y = 62
-28 + y = 62
<em><u>Add 28 to both sides</u></em>
y = 90
The value of y is 90, and the value of x is -28 (this is your answer)
To make sure that these values are correct, we can plug them into the original equations.
y = 6 - 3x
x + y = 62
90 = 6 - 3(-28)
90 = 90 √ this is correct
-28 + 90 = 62
62 = 62 √ this is also correct
