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Simplifying 2(7n + 4) + 7 = -3(-6n + 7) Reorder the terms: 2(4 + 7n) + 7 = -3(-6n + 7) (4 * 2 + 7n * 2) + 7 = -3(-6n + 7) (8 + 14n) + 7 = -3(-6n + 7) Reorder the terms: 8 + 7 + 14n = -3(-6n + 7) Combine like terms: 8 + 7 = 15 15 + 14n = -3(-6n + 7) Reorder the terms: 15 + 14n = -3(7 + -6n) 15 + 14n = (7 * -3 + -6n * -3) 15 + 14n = (-21 + 18n) Solving 15 + 14n = -21 + 18n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-18n' to each side of the equation. 15 + 14n + -18n = -21 + 18n + -18n Combine like terms: 14n + -18n = -4n 15 + -4n = -21 + 18n + -18n Combine like terms: 18n + -18n = 0 15 + -4n = -21 + 0 15 + -4n = -21 Add '-15' to each side of the equation. 15 + -15 + -4n = -21 + -15 Combine like terms: 15 + -15 = 0 0 + -4n = -21 + -15 -4n = -21 + -15 Combine like terms: -21 + -15 = -36 -4n = -36 Divide each side by '-4'. n = 9 Simplifying n = 9
| 0.5*x*(x+4)=30 | | 0.5*x*x+4=30 | | x^2+kx+k-x+2=0 | | 3(2a-3)=5(a+4) | | (6x-5)(4x+3)= | | 5(2x+3)+7=12-5(x+1) | | 3(1-5x)=3(x-5) | | 3(2-3x)-4(2x-5)=12 | | 5+2(x+2)= | | 131=80(9.8) | | 25x-7+8= | | -2=v-5/-3 | | -5(x+4)=10(7-2x) | | -2(0.5-4s)=-3(4-3.5) | | x+4-2x-5=1 | | 6z+6*6z+6*8+6z= | | 24t-4t= | | 2x-1+1+x+5=180 | | 5z+4-2z= | | -10+7(1+5v)=4(1+9v) | | 5t/4+3=18 | | a^2b= | | 2x-8=-6x-8 | | -7+6n=4n+5 | | 7x^2+3x= | | 5(y-2)+2=32 | | (x+2)(x+3)+(x-4)(x+5)= | | -15x^2+270x-675=0 | | -3/4+2=17.5 | | (W-6)11= | | 2(x+8)=3(x-5) | | -7n-4(9n-1)=-6(1+7n) |