Question

13m - 4z = -6

m =


7m + 8z = 78
z =

B)
9a + 7b = 17
a =


7a + 6b = 16
b =

C)
-5x + 25y = -105
x =


4x - 8y = 48
y =

D)
2x + 23y = 584
x =


-2x - 5y = -152
y =
me ayudarían con los resultados por favor

Answer 1

A)
13m-4z=-6
13m=-6+4z
m=(-6+4z)/13

7m+8z=78
8z=78-7m
z=(78-7m)/8

B)
9a+7b=17
9a=17-7b
a=(17-7b)/9

7a+6b=16
6b=16-7a
b=(16-7a)/6

C)
-5x + 25y = -105
-5x=-105-25y
x=-5(21+5y)/-5
x=21+5y

4x - 8y = 48
-8y=48-4x
y=4(12-x)/-8
x=-(12-x)/2

D)
2x + 23y = 584
2x=584-23y
x=(584-23y)/2

-2x - 5y = -152
-5y=-152+2x
y=-2(76-x)/-5
y=2(76-x)/5

Saludos!