5x * 18 = 20
1. /18
5x=1.11111111
2. /5
x=0.2222222222
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-4 5x + 2 = -18 0x + -2 = -2 ---------------- 5x + 0 = -20 5x / 5 = -20/5 x = -4
10x - 18 = 5x + 2 Add -5x + 18 to both sides of the equation, to get: 5x = 20, from which x = 4.
x = 4
5x+1=20 5x=20-1 5x=19 5x/5=19/5 x=19/5
5x+18 = 2x+9 5x-2x = 9-18 3x = -9 x = -3 and y = 3