Answer:
-2x + 7x + 34 = -2 ( 1 - 7 x ) x=4
I think the common denominator is 90. 8,9,and 10 can all go into 90.
Let x represent the width. Since the length is 3 more than 4 times the width, that would be equal to 3+4x. The perimeter is the sum of all sides, so that would be x+x+3+4x+3+4=86. Combine like terms, which would result in 10x+6=86. Subtract 6 from both sides giving you 10x=80. Divide by 10 giving you x=8. That means that the width is 8. The length is 3+4x. Substitute 8 for x giving you 3+4(8). Multiply, giving you 3+32, then add, which would give you 35. 35 is the length.
Answer: 4.5y
Step-by-step explanation: You have To Multiply 15 times 0.3 and you get 4.5y