20x+7y=4
2x-2y=-5
5 and 7 tenths from 6.78
4.73+52.7
.
21+4x-x^2=0
41.6+52.7
factorize 4x-6
√3/2 x 12√3
4x-6
65-39X over 13 minus [ negative 2X] squared minus X [3X -4]
12d x 6dq
