Question

решите уравнение: 1) (5x + 2x) x 14 =294; 2) (12y -5y) : 4 = 21: 3) (19x + 6x) : 35 = 5; 4) 234 : (21y - 8y) = 3

Answer 1

1. 7x*14=294
7x=294:14
7x=21
X=3

2. 7y:4=21
7y=21*4
7y=84
y=12


3. 25x:35=5
25x=5*35
25x=175
X=7


4. 234:13y=3
13y=234*3
y=54