9x-27=7x-1 9x-7x= -1+27 26=2x x=26 / 2 therefore x=13
That is an equation.Oh, you wanted to know for which values of x that equation is true? Okay...6x + 3x + 8 = 35⇔ (6x + 3x) + 8 = 35⇔ 9x + 8 = 35⇔ 9x + 8 - 8 = 35 - 8⇔ 9x + 0 = 27⇔ 9x = 27⇔ 9x / 9 = 27 / 9⇔ x = 27 / 9⇔ x = 3
9x - 20 = 7 9x = 27 x = 3
3x-3y=-9 and 9x-9y=-27 both simplifies to x-y=-3.
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9x+27 = -81 9x = -81-27 9x = -108 x = -12
9x-27=7x-1 9x-7x= -1+27 26=2x x=26 / 2 therefore x=13
12x + 6=9x + 27 12x-9x + 6=9x - 9x + 27 subtract 9x from both sides. 3x + 6 = 27 simplify 3x + 6 - 6=27 - 6 subtract 6 from both sides. 3x=21 simplify 3x/3=21/3 divide both sides by 3 x=7 simplify 12(7) + 6=>84+6=>90 9(7) + 27=>63+27=>90 It checks out!
Divide both sides by 9: 9x > 27 → x > 3
That is an equation.Oh, you wanted to know for which values of x that equation is true? Okay...6x + 3x + 8 = 35⇔ (6x + 3x) + 8 = 35⇔ 9x + 8 = 35⇔ 9x + 8 - 8 = 35 - 8⇔ 9x + 0 = 27⇔ 9x = 27⇔ 9x / 9 = 27 / 9⇔ x = 27 / 9⇔ x = 3
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9x - 20 = 7 9x = 27 x = 3
no
27
As for example if 9x = 27 then x = 3
3x-3y=-9 and 9x-9y=-27 both simplifies to x-y=-3.
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