Ifx = 3(y+w)-1. what is the value of w in terms of x and y

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

Name the quadrilaterals that have four equal sides.

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°.