Check all inequalities that are true

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Ответ:

Shyerica

14.01.2023

Mathematics

Since you have y alone on one side of the equation......

Use substitution and plug in 1/2x-4 for y in the other equation.

$3x+2(1/2x-4)=23\\$

Distribute

3x+x-8=23

Combine like terms

4x-8=23

Add 8 to both sides

4x=31

Divide by 4

and x=31/4

Plug this value in for x

31/4*1/2-4=y

Simplify

31/8-4=y

Multiply everything by 8 and simplify

$31-32=8y\\-1=8y$

Divide.....

y=-1/8

Your answers are:

$y=-1/8\\x=31/4$

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