Answer:66.3
Step-by-step explanation: you multiply 12.5 times 5.3 and the round to the nearest tenth
3x+2(5x-3)=7
3x+10x-6=7
13x-6=7
13x=13
x=1
The first step was the combine the like terms; in this example he is subtracting the 3x on both sides of the =.
If you were to solve the equation it would look like this:
2x+6=3x-8
-3x -3x
-x+6=-8
-6 -6
-x=-14
/-1 /-1
x=14
X would equal 9. Subtract 18 from both sides then divide by two to get 9 as X
The answer you will be dividing by is 4. hope this helps
