Question

Найдите неизвестное число : а) 12*(x+5)=600 в) 320:(38+x)=4

Answer 1

А)12*(х+5)=600
12х+60=600
12х=600-60
2х=540
х= 540:2
х=270.
Ответ:х=270

Answer 2

a) 12*(x+5) = 600 First, distribute the 12 to both terms inside the parentheses: 12x + 60 = 600 Subtract 60 from both sides: 12x = 540 Divide both sides by 12: x = 45

b) 320/(38+x) = 4 Multiply both sides by (38+x): 320 = 4*(38+x) Divide both sides by 4: 80 = 38 + x Subtract 38 from both sides: x = 42

So the unknown number in the first equation is 45 and in the second equation is 42.