What is the solution for x in the equation -3x+7x-8=34+9x-2

x= -8

Step-by-step explanation:

1) -3x+7x-8=34+9x-2

2) -3+7x-9x=8+34-2

3) -5x=40

4) x= 40/-5= -8

In the first step you have to separate the x from the numbers,placing on the left the terms that contain it and on the right the rest. When you do this step you need to change the signs of shifted numbers (-8 has become +8),then you can perform an algebraic sum (for istance: -3+(-9)=-12; -12+7=-5). Your last step will be the division between the term with and without x that are respectively denominator and numerator. After that, you'll conclude.

I hope I have helped,byee ;)

Total amount contributed by principal = 4×128 = $512

Step-by-step explanation:

In 4 weeks, the school raised $2560 for a health and fitness awareness students collected donations in 5 days each week. Total number of days for which collection was made

= 5×4 = 20 days

The principal agreed to make one donation that was the same as the amount collected in a day each week. Let amount per day be x since all days are of equal amount, this means

A week = 5x

4weeks = 20x

20x = 2560

x = $128

The principal contributed $128 in each week

Total amount contributed by principal = 4×128 = $512