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Simplifying 3x + -7x + 21 = -13 Reorder the terms: 21 + 3x + -7x = -13 Combine like terms: 3x + -7x = -4x 21 + -4x = -13 Solving 21 + -4x = -13 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + -21 + -4x = -13 + -21 Combine like terms: 21 + -21 = 0 0 + -4x = -13 + -21 -4x = -13 + -21 Combine like terms: -13 + -21 = -34 -4x = -34 Divide each side by '-4'. x = 8.5 Simplifying x = 8.5
| 7=10+y | | 0.3x+(x-10)*0.5=12 | | 90=-9(-6-2z) | | 6x-16=14-4x | | БиографияипсихологическийпортретРаскольников—человекзамечательногоума,онглубокоитонкочувствует,способенкпостоянномуинтеллектуальномуанализусвоихичужихпоступков.Оноченьзамкнут,необщителен.Единственныйдругего—этоРазумихин.Раскольниковзадавленнищетой,онстрад | | 3(y+4)-3=30 | | (9n^7+8n^6+7)+(5n^7+2n^6-4)= | | -3=x+15 | | 4x^2+41x+10= | | 2(2x+4)+4(2x+6)+5=12x+38 | | y-7-6y=13 | | 35y+1=21 | | 6-7k+3-3(4-K)= | | 3x-(x+5)=1 | | (4x-3)(3x-6)= | | -5(6y-10)-y=-2(y-2) | | 75=5N | | X^8sin(5x)=f(x) | | 2x^4+4x^3+8x^2=0 | | 2x-6x+4=x-3+7 | | 32+10-5s=-2 | | 4w-10= | | -5=x+18 | | 6y=18y+12 | | 3.5x+.04(11x-.6)= | | 7y+12=4y-3 | | 5x-52=4-2x | | -3.9-5x=4.1 | | 4x^4-12x^3+17x^2-24x+18=0 | | 9x-7=7+7x | | T(n)=-2n+5 | | 3+2m-1=5-2-3m |