20(-0.3)(0.8)+84(0.02)-(8.4)(0.2) = -4.8
see: http://web2.0calc.com/#20(-0.3)(0.8)+84(0.02)-(8.4)(0.2) and push the "=" Button
20(-0.3)(0.8)+84(0.02)-(8.4)(0.2) = -4.8
see: http://web2.0calc.com/#20(-0.3)(0.8)+84(0.02)-(8.4)(0.2) and push the "=" Button