Add the following: (i) 5a2b2+10ab−12a2+15b−20 and 34ab+24a2+22b+24 (ii) abc+6bcd+abd−9ab+4bc−9a−43 and 4acd+10ac−54b−32c (iii) 5bc+9ad−3c−12 and 24−5c−5b+2ab [4 MARKS]
Add and express the sum as mixed fraction: (i)−125 and 4310 (ii)247 and −114 (iii)−316 and −278 (iv)1016 and 78