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Simplifying 3(x + -2) + -1(1 + -1x) = 13 Reorder the terms: 3(-2 + x) + -1(1 + -1x) = 13 (-2 * 3 + x * 3) + -1(1 + -1x) = 13 (-6 + 3x) + -1(1 + -1x) = 13 -6 + 3x + (1 * -1 + -1x * -1) = 13 -6 + 3x + (-1 + 1x) = 13 Reorder the terms: -6 + -1 + 3x + 1x = 13 Combine like terms: -6 + -1 = -7 -7 + 3x + 1x = 13 Combine like terms: 3x + 1x = 4x -7 + 4x = 13 Solving -7 + 4x = 13 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + 4x = 13 + 7 Combine like terms: -7 + 7 = 0 0 + 4x = 13 + 7 4x = 13 + 7 Combine like terms: 13 + 7 = 20 4x = 20 Divide each side by '4'. x = 5 Simplifying x = 5
| 4r^2-16=0 | | b+2b=-(3b)(2)+1 | | 2t(t+6)=0 | | x^2-16x-105=0 | | 3m+2=11 | | x+51=114 | | 6y-10-y=14 | | 2(-q+4)-3(q-2)=4q | | 3n^2-23n+20=6 | | 9c+4-3c+8=0 | | 2x-5+10x=6-4x-1 | | 5x-40=2x | | 4a+6a=40 | | 12m=20m+40 | | 97+x=91 | | -2(6+r)-7=18 | | 3(r-1)+2(r-1)=-20 | | f(t)=1.90+1.40t | | 18x-40=22x | | 3(r-1)+2(r-1)=20 | | 9(3t-5)+13=-8 | | 4d-2=20 | | b=4a-17-2b | | 4x-5=8x-7 | | 765=10n+7n | | 3v+5=8-4(2v-2) | | x^3=0.027 | | x^2=0.49 | | (X^2+3x-2)+(5x-6)=y | | 3x+x-5=-21 | | x+(x-3)+(x+4)=40 | | [6y-4]=18 |