Question

solve the following equations by eliminayion method​

Answer 1

Answer:

I think this is the right answer of the question

Answer 2

Answer:

a=1/5 , b =1

Step-by-step explanation:

10a+2b=4 ----(1)

15a-5b=-2 ----(2)

multiply eq1 by 15 and eq2 by 10

so we get

150a+30b=60 ----(3)

150a-50b=-20 -(4)

subtract eq4 from eq3

we get

80b=80

so b=1

substituting value of b in eq 1

we get

10a+2=4

10a=2

a=2/10

a-=1/5