-1/2 - 6x/5= 4/7
Take like terms on one side
-1/2-4/7=6x/5
Solve LHS by taking lcm 14
(-1×7-4×2) /14 = 6x/5
(-7-8)/14 = 6x/5
-15/14 = 6x/5
-15×5/14×6 =x
So x=-25/28
yes, it does not matter if the y is at the beginning or at the end. However, most teachers usually prefer to have the y at the beginning as it is easier to read.
It is proportional because it has a direct relationship.
Answer:
147
Step-by-step explanation:
The ∑ symbol means sum the term inside 4n + 1 from n = 2 to n = 8
Substitute n = 2, 3, 4, 5, 6, 7, 8 into the expression and sum the results , that is
4(2) + 1 + 4(3) + 1 + 4(4) + 1 + 4(5) + 1 + 4(6) + 1 + 4(7) + 1 + 4(8) + 1
= 9 + 13 + 17 + 21 + 25 + 29 + 33
= 147
