I NEED HELP Justify each step of the solution by stating the property that was used to get each step.

Given: 2(10-13x)+9x=-34x+60

Step 1: 20-26x+9x=-34x+60

Step 2: -17x=-34x+40

Step 3: 17x=40

Step 4: x=40/17

Which mathematical statements are true? 1) if 3 is an odd number, then 3 times 3 is an even number. 2) if 6 is less than 7, then 4 is greater than 7. 3) six is divisible by 3, and 10 is a multiple of 2. 4) the average of the data is greater than the largest value in the data, or it’s less than the largest value in the data. 5) the slope of a linear graph is its rate of change, and the graph’s y-intercept is the initial value. 6) if an equilateral triangle has equal angles, then all its angles will measure 45°.

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section