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1) 4x + 9 = 2x - 6
Subtract 9 from both sides
4x = 2x - 15
Subtract 2x from both sides
2x = -15
Divide both sides by 2:
x = -15/2 or -7.5
2) 2(x - 5) = 5x + 23
Expand the brackets:
2x - 10 = 5x + 23
Subtract 23 from both sides
2x - 33 = 5x
Subtract 2x from both sides
3x = -33
Divide both sides by 3
x = -11
3) 7x + 3 = 2x + 13
Minus 3 from both sides
7x = 2x + 10
Subtract 2x from both sides
5x = 10
Divide both sides by 5
x = 2
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- Ally ✧
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