## anonymous one year ago Solve 2a - 5d = 30 for d.

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1. anonymous

d = (30-2a)/-5

2. anonymous

To solve this, we have to isolate the variable d. The first thing we would do is subtract 2a, which makes the equation look like this: $-5d=30-2a$ The next step is to divide the -5 from both sides. This is how it's done: $\frac{ -5d}{ -5 } d=\frac{ 30 }{ -5 }\frac{ -2a }{ -5 }$ $d=-6-\frac{ 2a }{ -5 }$ Now the equation is solved!

3. anonymous

2a-6