Solve when t ^ (- s) what the and last term means are 15; a ^ r 35 and ? | Equatix - Math Solver

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Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$\left. \begin{array} { l } { - 5 - 5 ? } \end{array} \right.$$

Evaluate

$-10$