Question

5x+5y=89, x+6y=7 simultanious equations
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Answer 1

Step-by-step explanation:

given

5x + 5y = 89 ------------(1)

x + 6y = 7 --------------(2)

now multiply equation (2) by 5

we get

5 x +30y = 35-------------(3)

Substract equation 1 and 3

we get

5 x + 5 y = 89

- 5x +30y = 35

-----------------------

0. -25y = 54

y = 54/-25

now put y = -54/25 in equation 2

x + 6y = 7

x + 6 x -54 /25=7

25x +326 =25 x 7

25x =175 -326

25 x = 151

x = 151/25

x

Answer 2

Step-by-step explanation:

5x +5y= 89..............equ.1

x+6y =7...................equ.2

equ.1 -- (equ.2)×5

y = -54/25

x = -149/25