Question

in rectangle ABCD diagonal ac=x+10 and diagonal bd=2x-30. Find the value of x

Answer 1

in rectangle diagonals are equal so,

x+10=2x-30

2x-x=10+30

x=40

Answer 2

Answer:

x+10=2x-30

x-2x=-30-10

x=40

putting value of x

2*40-30

80-30=80