5 1/2 x is the correct answer! 5x must be multiplied by both fractions within the parentheses. Please vote my answer brainliest!
The triangle has to equal to 180. So add them up and equal it to 180
For eliminating you need to have a variable that cancels the other out and in this case 2x and -2x do. Then you want to take -3y+9y and add the numbers after the equal sign. -9+3
Here's my interpretation: 4 whole km, plus zero tenths of a km, plus 3 hundredths of a km, plus 5 thousandths of a km.
