Question

уравнение  решите плиз (200+у)*3+500=1400

Answer 1

290+у*3=1400-500
(290+у)*3=900
290+у=900:3
290+у=450
У=450-290
У=160

Answer 2

(200+у)*3+500=1400
600+3у+500=1400
3у=1400-600-500
3у=300
у=100