solve each equation.write each equation in simplest form
7x/8=21
a.24
b.18.375
c.1.857
d.19
Your a coward if you answer these questions
A
B
C
B
D
1. 24
2. q=-3
3. 3(x-10)= 15
4. x-14.5= 156.5
5. 50 weeks
Anonymous is correct.
Is this for connexus Pre-Algebra Unit 7 Lesson 1?
7x/8=21
Multiply both sides by 8
7x = 168
Solve for x
Thank you, Anonymous, 100% correct.
A
B
C
B
D
Hi!!! Yes they are.. I’m your classmate;-;
Hey, I suck at math.
To solve two-step equations, you need to do the inverse.
Ex. -6q+5.8=23.8
When it comes to these problems, you need to do adding and subtracting first. In the problem, it says "+5.8" but we need to subtract. We subtract because we need to do the inverse.
So, you remove "+5.8" from the left side and do 23.8-5.8=18.
Now we have -6q=18. When you put a number next to a variable, it is multiplication. So, we need to divide. Remove "-6" from the left side and divide. 18/-6=-3.
Now, all we have is q=-3. -3 is the correct answer.
Basically, you just need to "undo" everything on the left side (or right side if the problem looks like this 23.8=-6q+5.8). You need to single out the variable.