Solve each equation below by isolating the variable.
1. 10x - 3(2x - 4) = 4(x + 3)
O
or undefined
3.-5x-(-7- 4x) = -2(3x - 4)
5. 8x - 3(2x-4) = 3(x-6)
2(x + 20) = 2 + (x-2)
4. 0.3(12x-16) = 0.4(12-3x)
6.(x+20)=(x-10) +9
Solve the equation by by inserting the assigned value.
7. y=-x-2 when y = -9
8. 1/2(6a-10) 12-(b-3a) when b = 11
Solve.
9. The perimeter of a rectangle is 42 centimeters. The length of the
rectangle can be represented by (x + 4), and its width can be
represented by (2x - 7). What are the dimensions of the rectangle in
centimeters?
10. Michaela pays her cell phone service provider $19.95 per month for
her service plan and 15 cents per minute. In June, her phone bill is
$127.95. How many minutes did Michaela use in June?