Question

question 8
solve: $9(x - 6) - 3 - 8x = -9$
$x = $
question help: video message instructor
submit question
question 9
solve the equation: $5x - 10 - 4x = -12$
answer: $x = $
question help: message instructor
submit question
question 10
translate the following verbal statement into an algebraic equation and the solve:
use $x$ for your variable.
twenty less than the difference between a number and nine is nineteen.
equation
$x = $
question help: video 1 video 2 video 3 message instructor
submit question

Explanation:

Question 8

Step1: Expand the parentheses

$9x - 54 - 3 - 8x = -9$

Step2: Combine like terms

$x - 57 = -9$

Step3: Isolate $x$

$x = -9 + 57$

Question 9

Step1: Combine like terms

$x - 10 = -12$

Step2: Isolate $x$

$x = -12 + 10$

Question 10

Step1: Translate to equation

$(x - 9) - 20 = 19$

Step2: Simplify left side

$x - 29 = 19$

Step3: Isolate $x$

$x = 19 + 29$

Answer:

Question 8: $x = 48$
Question 9: $x = -2$
Question 10: Equation: $(x - 9) - 20 = 19$, $x = 48$