Question 151292
{{{B= (4/7)(A-11)}}} Start with the given equation.



{{{(7/4)B= cross((7/4)(4/7))(A-11)}}} Multiply both sides by the reciprocal of {{{4/7}}}. This gets rid of the {{{4/7}}} on the right side.



{{{(7/4)B+11=A+cross(-11+11)}}} Add 11 to both sides.



{{{(7/4)B+11=A}}} Simplify.



So the answer is {{{A=(7/4)B+11}}}