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Simplifying 7(x + 3) = 4[x + -1(4 + -1x)] Reorder the terms: 7(3 + x) = 4[x + -1(4 + -1x)] (3 * 7 + x * 7) = 4[x + -1(4 + -1x)] (21 + 7x) = 4[x + -1(4 + -1x)] 21 + 7x = 4[x + (4 * -1 + -1x * -1)] 21 + 7x = 4[x + (-4 + 1x)] Reorder the terms: 21 + 7x = 4[-4 + x + 1x] Combine like terms: x + 1x = 2x 21 + 7x = 4[-4 + 2x] 21 + 7x = [-4 * 4 + 2x * 4] 21 + 7x = [-16 + 8x] Solving 21 + 7x = -16 + 8x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8x' to each side of the equation. 21 + 7x + -8x = -16 + 8x + -8x Combine like terms: 7x + -8x = -1x 21 + -1x = -16 + 8x + -8x Combine like terms: 8x + -8x = 0 21 + -1x = -16 + 0 21 + -1x = -16 Add '-21' to each side of the equation. 21 + -21 + -1x = -16 + -21 Combine like terms: 21 + -21 = 0 0 + -1x = -16 + -21 -1x = -16 + -21 Combine like terms: -16 + -21 = -37 -1x = -37 Divide each side by '-1'. x = 37 Simplifying x = 37
| 5-4/5 | | 4x-6x-x-5x= | | 7=21a | | X+102+48=180 | | X-89=45 | | 40b=15 | | X+31+77=180 | | 2289*4/3 | | 8/22=28/x | | 20x-(8x-5)=17 | | (2x+3)(x^2-x-2)= | | 24-4x=-24 | | 1+3=2x-1 | | 14x^3-49x^2+21x=0 | | 244X^2-X^2= | | 3n+16=2-8n | | 5x-(3x-5x)=7x | | 6X5/12 | | 13(y)-4=x | | 4x+80y=56 | | y(y+1)=-3y-6 | | ax+54=4x+16 | | 23.6=m-33.8 | | 2x/5-3=3/2(4x-3) | | log[6](5x-14)=2 | | 4/3x3.14x.75^3 | | 4x^2+15x=3 | | 8times-28=44 | | -8/6-x/5=7 | | 5b-8b= | | 4/3*3.14*.75^3 | | 8.06+18.5J=1.3+18.1J |