Question

Q#9: Solve these:                               

8x – 3 = 7x +12

3(x+4) +5(x+3) =2x-27

x2 -6 =8-2x3

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Answer 1

Step-by-step explanation:

8x-3=7x+12

8x-7x=12+3

x=15

3(x+4)+5(x+3)=2x-27

3x+12+5x+15=2x-27

6x=-27-15-12

6x=54

x=9

x²-6=8 -2x²

x²+2x²=8+6

3x²=14

x²=14/3

x=√14/3