To solve a linear equation you need to get the letter on it's own.
(- 3) 5x + 3 = 18
(÷ 5) 5x = 15
x = 3
Letter on both sides? Equations with brackets
(+ 2x) 2 - 2x = 26 + 4x Always start by multiplying out the brackets
(- 26) 2 = 26 + 6x 19 = 8 - 2 (5 - 3y)
(÷ 6) - 24 = 6x 18 = 8 - 10 + 6y (+ because two minus')
- 4 = x 19 = - 2 + 6y (+ 2)
19 = 6y (÷ 6)
21/6 = y meaning y = 3.5
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