The value would be 4.
First, you have to do 4 + 3 because it's in parenteces. This equals 7
Secondly, you have to do 2 x 7, which is 14.
Last you have to do 18 - 14 which is 4.
Answer:
im just going to copy and paste the correct ones and their answers:
<u>Problem: The sum of twice a number and −6 is 9 more than the opposite of the number. Find the number.</u>
<u>Equation: 2n − 6 = 9 − n</u>
<em>n = 5</em>
<u>Problem: Anna drove 450 km in 6 hours. Find her rate of travel.</u>
<u>Equation: 450r = 6</u>
<em>r = 75</em>
<u>Problem: Three times a number increased by 44 is the same as the opposite of the number. Find the number.</u>
<u>Equation: 3n + 44 = −n</u>
<em>n = -11</em>
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