a) SOLVE FOR W:W+6TW=11-W

Question

b)Make j the subject of the formula: r=9-7jk+4jt^2

Answer 1

W+6TW=11-W
2W + 6TW = 11
W(2 + 6T) = 11
W = 11/(2 + 6T)

r=9-7jk+4jt^2
4jt^2 - 7jk = r - 9
j(4t^2 - 7k) = r - 9
j = (r - 9)/(4t^2 - 7k)

Answer 2

W+6tw=11-w
w+6tw+w=11
w(1+6t+1)=11
w(2+6t)=11
w=11/(2+6t)
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r=9-7jk+4jt^2
r-9=4jt^2-7jk
r-9=j(4t^2-7k)
j=r-9/(4t^2-7k).......