Հանրահաշիվ

337

x+8=33, x=33-8, x=25,

x×4=52, 4x=52, x=52÷4=13

x×7+12=26, 7x+12=26, 7x=26-12, 7x=14, x=14÷7=2

(x-4)×5=35, 5x-20=35, 5x=35+20, 5x=55, x=55÷5=11

338

x+12=18, x=18-12, x=6, (փոքրը)

339

x+18=22, x=22-18, x=13 (փոքրը)