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sashaice [31]
3 years ago
10

Solve. X = -7 4x - 4y = 12 (x,y)

Mathematics
1 answer:
Fynjy0 [20]3 years ago
4 0

Answer:

(-7, -10)

x=-7\\y=-10

Step-by-step explanation:

4x-4y=12

Substitute x for -7.

4(-7)-4y=12

Multiply 4 by -7.

-28-4y=12

Add 28 on both sides.

-4y=40

Divide -4 on both sides.

y=-10

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Read 2 more answers
5 less than the quotient of a number and 3 is -7
hram777 [196]
\frac{x}{3}  -  5  =  -7  .
____________________________________________
This would be one way to write the expresion/equation; in which "x" represents the unknown number.

Now, to solve for "x" ;
____________________________________________
Given:
____________________________________________
\frac{x}{3}  -  5  =  -7  ;

Add "5" to EACH SIDE of the equation:
_____________________________________________
\frac{x}{3}  -  5  + 5 =  -7  + 5 ;

to get:

\frac{x}{3}  = -2 ;

x = (-2 * 3) ;
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x =  - 6 .
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