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Simplifying (2x + 7) + -2(3x + -8) = 31 Reorder the terms: (7 + 2x) + -2(3x + -8) = 31 Remove parenthesis around (7 + 2x) 7 + 2x + -2(3x + -8) = 31 Reorder the terms: 7 + 2x + -2(-8 + 3x) = 31 7 + 2x + (-8 * -2 + 3x * -2) = 31 7 + 2x + (16 + -6x) = 31 Reorder the terms: 7 + 16 + 2x + -6x = 31 Combine like terms: 7 + 16 = 23 23 + 2x + -6x = 31 Combine like terms: 2x + -6x = -4x 23 + -4x = 31 Solving 23 + -4x = 31 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-23' to each side of the equation. 23 + -23 + -4x = 31 + -23 Combine like terms: 23 + -23 = 0 0 + -4x = 31 + -23 -4x = 31 + -23 Combine like terms: 31 + -23 = 8 -4x = 8 Divide each side by '-4'. x = -2 Simplifying x = -2
| 8m+5=1+4m | | (11x-18)+(x)+(x)+(7x+30)=360 | | 4x^2-4=-1 | | -3x-6+7x=-26 | | 1+7= | | 3v(5v-3)=0 | | 5(3s+5)=130 | | 40x+15=15x | | 3x-4=-13+10x | | 16x^2-6x+3=0 | | 15+e=200 | | -5(5x-5)=-25 | | 11x-18=7x+30 | | 5+p=200 | | 5x+35=105 | | 3(a-5)=24 | | 3x+8x=15+8x | | p+200=5 | | 3(a-5)=25 | | 6+10=4x-12 | | 3(a+5)=25 | | 30+12=4x+9 | | 6x-6=x-21 | | -14+m(x+10)=7(2x+4)+x | | 4(x+10)=-8 | | -10-6a=2-(6+7a) | | x+(x+16)=180 | | -90+x=1800-x | | 4x^2-y^2+2x-3=0 | | f(x)=x^2-12x+11 | | 78=51+n | | 9x-85+6x-77=180 |