Question

Solve the simultaneous equations
x+2y=2;x-3y=7

Answer 1

Answer:

x = 4 and y = -1

Step-by-step explanation:

Using substitution method,

x+2y=2. (1)

x-3y= 7. (2)

From (1),

x= 2-2y. (3)

Put (3) in (2),

(2-2y)-3y=7

2-2y-3y =7

2-5y= 7

-5y = 7-2

-5y = 5

y = -1

Put y in (1),

x+2(-1) = 2

x-2 = 2

x= 2+2

x = 4

Answer 2

Answer:

step by step

x +2y=2×1

X-3y=7×1

X+2y=2

X-3y=7

(Subtract)

5y= -5

Y=-5/5

Y=-1

Substitute 'y' in equation (1)

X+2y=2

X+2(-1)=2

X-2=2

X=2+2

X=4

Hence,X=4 and Y =-1

Hope it helps u☺☺

Step-by-step explanation: