Explanation:
Open the bracket by using the number outside the bracket to multiply the ones inside.
Opening the bracket, we have that; 6x+12 - x =47
6x-x+12=47
5x+12=47
Collect like terms,
5x=47-12
5x=35
d.b.s by 5 to make x the subject
5x/5=35/5
x=7
Answer:
x = 7
3(2x + 4) - x = 47
Multiply out the brackets: 6x + 12 - x = 47
Collect like terms: 6x - x + 12 = 47
Combine like terms: 5x + 12 = 47
Subtract 12 from both sides: 5x = 35
Divide both sides by 5: x = 7
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