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Solve the Equations
142=587x
2x+96=443x
26=7x+4(2x4)
7x+5(4x4)=124
7x35=28
10x+36=1082x

Math 
MathMate,
142=587x
Add 7x to each side
7x+142=587x+7x
7x+142=58
Now subtract 142 from each side to isolate x
7x+142142=58142
7x=84
Divide by 7 to find x
7x/7 = 84/7
x = 12
Now you should be able to try the remaining problems the same way as above and post your answers for checking.