Question

1)80×4=t+205
2)90×b=324+18×2

Answer 1

320=t+205
t=320-205
t= 115
Ответ: 115

90*b=324+36
90*b=360
b=360:90
b=4 
Ответ: 4

Answer 2

1) 80 * 4 = t + 205
320 = t + 205
t = 320 - 205
t = 115

2)90*b=324+18*2
90*b=324+36
90*b=360
b=4