Please may someone show me the steps to changing the subject for the following questions, the subject needs to be y for each one.

1)h-yh+y = k

2)y+3dy-2 = e

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- Sep 20th 2012, 12:51 PMjoe345Changing the subject of the formulae
Please may someone show me the steps to changing the subject for the following questions, the subject needs to be y for each one.

1)__h-y__h+y = k

2)__y+3____d__y-2 = e

- Sep 20th 2012, 12:52 PMjoe345Re: Changing the subject of the formulae
Sorry everything has been moved to the left a little.

- Sep 20th 2012, 01:41 PMSorobanRe: Changing the subject of the formulae
Hello, joe345!

Quote:

Multiply by

Expand: . . . . . . . .

Get all*y*-terms to one side:

. . . . . . . . . . .

Factor: . . . .

Divide by

Multiply by

[The last step is not necessary, but the answer is neater.]

Quote:

Cross-multiply: .

Expand: . . . . . .

Get*y*-terms on one side:

. . . . . . . . .

Factor: . . .

Divide by

Multiply by

- Sep 20th 2012, 01:49 PMjoe345Re: Changing the subject of the formulae
Thankyou very much