Решите ) 1)7a=-310+3а 2)-2x+16=5x-19 3)25-3b=9-5b 4)3+11y=203+y5 5)3×(4-8)=8x-6

1) 7a = -310 + 3a
7a - 3a = -310
4a = -310
a = - 77.5

2) -2x + 16 = 5x - 19
-2x - 5x = -19 - 16
-7x = -35
x = 5

3) 25 - 3b = 9 - 5b
-3b + 5b = 9 - 25
2b = -16
b = -8

4) 3 + 11y = 203 + 5y
11 - 5y = 203 - 3
6y = 200
y = 33.33333

5) 3 * (4-8) = 8x - 6
12 - 24 = 8x - 6
-8x = -6 -12 + 24
-8x = 6
x = - 0.75

1.а=-77.5
2.х=-5
3.b=-8
4.y=33,(3) в периоде
5.x=0,3