Hi,
Work:
Equation;
[tex]121 + 2 = 9( - 6 - 7p) + 4p [/tex]
First add up numbers and distribute 9 over parenthesis.
[tex]123 = - 54 - 63p + 4p[/tex]
Second: collect like terms.
[tex]123 = - 54 - 59p[/tex]
Move variable 59p to left side and change its sign.
[tex]59p + 123 = - 54[/tex]
Then move constant 123 to right side and change its sign.
[tex]59p = - 54 - 123[/tex]
Calculate the difference.
[tex]59p = - 177[/tex]
Divide both sides of equation by 59.
[tex]p = - 3[/tex]
Hope this helps.
r3t40
