G gradient.life New member Jul 11, 2009 #3 7/b+5 = 10/5 multiply 10/5 by b+5 and multiply 7 by 5. This will eliminate the denominator, so you are left with: 35 = 10(b+5) 35 = 10b + 50 [subtract 50 from both sides] -15 = 10b [divide both sides by 10] -15/10 = b [simplify] -3/2 = b
7/b+5 = 10/5 multiply 10/5 by b+5 and multiply 7 by 5. This will eliminate the denominator, so you are left with: 35 = 10(b+5) 35 = 10b + 50 [subtract 50 from both sides] -15 = 10b [divide both sides by 10] -15/10 = b [simplify] -3/2 = b