the equation 8x+6-10x=-2(3x-1) is solved by four students. they each show the first step of their work. what is an invalid first step

8x+6−10x=−2(3x−1)

Step 1: Simplify both sides of the equation.

8x+6−10x=−2(3x−1)

8x+6+−10x=(−2)(3x)+(−2)(−1)(Distribute)

8x+6+−10x=−6x+2

(8x+−10x)+(6)=−6x+2(Combine Like Terms)

−2x+6=−6x+2

−2x+6=−6x+2

Step 2: Add 6x to both sides.

−2x+6+6x=−6x+2+6x

4x+6=2

Step 3: Subtract 6 from both sides.

4x+6−6=2−6

4x=−4

Step 4: Divide both sides by 4.

4x

4

=

−4

4

x=−1

x=−1

Step-by-step explanation:

The first step is the distribute the -2 over the parentheses, so it's:

8x + 6 - 10x = -2*3x + - 2* -1

8x + 6 - 10x = -6x + 2.

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice