467*32=
2x+7=15
907+401=
x+6y=27 7x-3y=9
898-512=
267+287=
9x-7(8-7)=20
7x+4y=13 5x-2y=19
512+789=
760*21=
x=3
x=4
1308
554
15411
x=3 y=-2
15960
1301
386
x=3 y=4
