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Savatey [412]
3 years ago
13

Solve the following system of equations using substitution. 4x + 2y = 12 x = y + 3

Mathematics
2 answers:
BigorU [14]3 years ago
4 0

Answer:

x = 3

y = 0

Step-by-step explanation:

The method of substitution is when one solves an equation for one of the variables, and then substitutes the expression into the other equation. After doing so, one will solve the other equation for the remaining variable and then backsolve for the first variable.

4x + 2y = 12

x = y + 3

The second equation is already sovled for parameter (x), subttiute this into the other equation,

4(y + 3) + 2y = 12

Distribute,

4y + 12 + 2y = 12

Simplify,

6y + 12 = 12

Inverse operations,

6y + 12 = 12

-12

6y = 0

/6

y = 0

Backsolve for (x), substitute the value of (y) into the equation for (x) and solve,

x = y + 3

x = 0 + 3

x = 3

Afina-wow [57]3 years ago
4 0

Answer: look at the picture, sorry I can’t solve x = y + 3 for x.

Step-by-step explanation: Hope this help :D

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5 0
3 years ago
14) Solve for x:<br> 4 + 2(x + 3x) = 4 - x(2 - 3) + 2x<br> A) 0<br> B) 1<br> 2<br> D) 3
tester [92]

answer;

x=0

Step-by-step explanation:

4 + 2 (x + 3x) = 4 - x(2-3) + 2x

let remove d brackets

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llet collect like terms

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3 0
2 years ago
Can someone do help with any of these please?
laiz [17]
39.

|z+7|=12/3
|z+7|=4
z+7=4
-(z+7)=4
solve the first equation:
z+7=4
z=-3
solve the second equation:
-(z+7)=4
z=-11

z=-11,-3

8 0
3 years ago
Someone help me out. explain maybe
miss Akunina [59]
3rd option would be correct in my opinion
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