0.1(x+80)+0.2x=14
The answer key says its 20 but I'm not getting 20.

x=20

Explanation to

Use distributive property for the first step. Meaning you multiply the 0.1 by the x and 80. You will now get 0.1x+8+0.2x=14.

For the second step, collect like-terms. Add the 0.2x to the 0.1x and you should 0.3x+8=14.

For the third step, move the constant to the right. Subtract the 8 by itself and it will cancel out. Subtract the 14 by 8 and you will get 6. Your new equation should be 0.3x=6.

Divide both sides by 0.3. Just like in the third step with 8, 0.3 will cancel itself. When divide 6 by 0.3, you will get your answer, x=20.

You're welcome, and I hope this helps!

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0