
<h2>
Explanation:</h2>
We have the following system of three linear equations:

Let's use elimination method in order to get the solution of this system of equation, so let's solve this step by step.
Step 1: Multiply first equation by
and add the result to the second equation. So we get:

Step 2: Multiply first equation by −2 and add the result to the third equation. So we get:

Step 3: Multiply second equation by −32 and add the result to the third equation. So we get:

Step 4: solve for z.

Step 5: solve for y.

Step 6: solve for x by substituting
and
into the first equation:

Finally:

<h2>Learn more:</h2>
Solving System of Equations: brainly.com/question/13121177
#LearnWithBrainly
First do 189-99. thats 90. then do 90/10 which is 9
It is 40 because 24/40= 0.6 and 18/30= 0.6 so yeah its 40
<span>4+6(7x+7)
= 4 + 42x + 42
= 42x + 46
hope it helps</span>