Question 75625
{{{12m - 25 = 4m + 7}}}
{{{12m - 25-4m = cross(4m -4m) + 7}}} Subtract 4m from both sides
{{{12m + cross(- 25 + 25) - 4m =7+25}}} Add 25 to both sides
{{{12m-4m=7+25}}} Now add like terms
{{{8m=32}}}
{{{cross(8/8)m=32/8}}} Divide both sides by 8
{{{m=4}}}
Basically what I just did was isolate m so I can see that it is equal to some number
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Check:
{{{12m - 25 = 4m + 7}}}
{{{12(4) - 25 = 4(4) + 7}}} Plug in m=4
{{{48 - 25 = 16 + 7}}}
{{{23 = 23}}} works