document.write( "Question 811768: Please help me solve the system of equation by the substitution method: \"3a-b=7+and+2a%2B2b=5\" \n" ); document.write( "
Algebra.Com's Answer #488875 by josgarithmetic(39620)\"\" \"About 
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Multiply the first equation by 2, and then add the left members of both equations, add the right-hand members of both equations, and equate these two sums. Solve directly for the variable, a. Use this result to find the value of variable b. \n" ); document.write( "
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