© Solve the simultaneous equations
-3x + y= – 8
3x + 2y = – 13
X =?
y =?

x=5

y=7

Step-by-step explanation:

using the elimination method, you can add both equations vertically, to eliminate the x

-3x+y=-8

3x+2y=-13

3y=21

y=7

we then fix the value of y into the first equation

-3x+y=-8

-3x+7=-8

-3x=-8-7

-3x=-15

x=5

d is correct

step-by-step explanation:

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58