1) 6x + 30 = 18
2) 5x - 10 = 55
3) -4x + 20 = 0
4) x/4 + 5 = -1
5) x/-5 - 9 = -3
6) x/8 +21 = 33
7) 14x/ 6 = 7
8) -12x/ 8 = 9
9) -10x/-6 = 8
10) -27x/-4 = -54
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Answers
Step-by-step explanation:
1) 6x + 30 = 18
6x = 18-30
6x = -12
x= -12/6 = -2
2) 5x - 10 = 55
5x = 55+10
5x = 65
x = 65/5 = 13
3) -4x + 20 = 0
-4x = -20
x = -20/-4
x = 5
4) x/4 + 5 = -1
(x+20)/4 = -1
x+20 = -1×4
x+20 = -4
x = -20-4
x = -24
5) x/-5 - 9 = -3
(x-(-45))/-5 = -3
(x+45) = -3×(-5)
x+45 = 15
x= 15-45
x = -30
6) x/8 +21 = 33
(x+168)/8 = 33
x+168 = 33×8
x+ 168 = 264
x = 264 - 168
x = 96
7) 14x/ 6 = 7
14x = 7×6
14x = 42
x = 42/14 = 3
8) -12x/ 8 = 9
-12x = 9×8
-12x = 72
x = 72/-12 = -6
9) -10x/-6 = 8
-10x = 8×(-6)
-10x = -48
x = -48/-10 = 4.8
10) -27x/-4 = -54
-27x = -54×(-4)
-27x = 216
x = 216/-27 = -8