I'll solve 11-14 since they are fairly simple problems once you get to understand them :)
- Remember: what you do to one side of the equation, you do to the other.
- To get everything on one side of the equation, you perform the opposite operation.
- Say for example, 4x = 8. Since you are multiplying 4 * x, the opposite operation of multiplication is division, so in this case you would DIVIDE both sides by 4.
11) 15 = 6.5 + x
- The opposite of addition, 6.5 + x, is subtraction, so subtract 6.5 from both sides.
15 - 6.5 = x
- 8.5 = x, which is the same as x = 8.5.
12) -3 + x = -17
- The opposite of subtracting is addition, so add 3 to both sides.
x = -17 + 3
13) 7x = -98
- You have 7 * x, which is multiplication, and the opposite of multiplication is division, so divide both sides by 7.
x = -98/7
14) x/-3 = -7
- The opposite of division is multiplication, so multiply both sides by -3.
x = -7 * -3
Hope this helped, good luck!
