Answer:
1: X= 8, 2: 2/5 or 0.4
Step-by-step explanation:
1: 2(2x + 1) + x = x + 2x + 18
5x + 2 = 3x + 18
2x = 16
x = 8
2: 2x + x + 2x = 10 + x
5x = 10 + x
4x = 10
x = 4/10
x = 2/5
x = 0.4
Answer:
38 and 108
Step-by-step explanation:
2a + 6b
2 (4) + 6 (5) Plug in values
8+30 = 38
12a + 60
12 (4) + 60 = 108
Answer: (0, 1) Usually, we put the solutions in parenthesis.
Step-by-step explanation: x(x+1) = x(2) which = x²+ x = 2x = x² + x - 2x = 0
x² - x = 0. Now we divide by x which = x(x - 1) = 0 and the new solution set is x = 0 and x -1 = 0 which equals x = 1
1 US dollar =1.31 Australian dollar
80 US dollar = x dollar
CrossMultiply
X = 140.8 dollar
