1) -9х = 36
х = 36/(-9) = <u>-4</u>
2) -1.8х = -5.4
х = -5.4/(-1.8) = <u>3</u>
3) 0.6х = -2.4
х = -2.4/0.6 =<u> -4</u>
2) 5у(во2)-2у=0
1)
4x - 20= 0
4x = 20
x=20/4
x=5
2)
3x - 5 = 4x + 1
-6 = x
3)
2(x+7) = 9 - 5x
2x+14 = 9 - 5x
7x = 9-14
x = - 5 /7
4)
13 * (x-3) = 4 * 65
13x - 39 = 260
13x = 260 +39
x = 299 / 13
x = 23