Question

M=1/2(d1+d2) (solve for d1)

Answer 1

Answer:

d1= -d2+M

Step-by-step explanation:

you would multiply d1 and d2 by 1/2, then add negative d2/2 to each side, then divide each side by 2/1.

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Answer 2

Answer:

$d=\frac{2M}{3}$

Step-by-step explanation:

Switch sides

$\frac{1}{2}\left(d\cdot \:1+d\cdot \:2\right)=M$

Multiply both sides by 2 to remove the fraction

$2\cdot \frac{1}{2}\left(d\cdot \:1+d\cdot \:2\right)=2M$

Then simplify

$3d=2M$

• Divide both sides by 3

$\frac{3d}{3}=\frac{2M}{3}$

$d=\frac{2M}{3}$