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Simplifying -1[8 + (4x + 5)] = 7 + -1(7x + 7) Reorder the terms: -1[8 + (5 + 4x)] = 7 + -1(7x + 7) Remove parenthesis around (5 + 4x) -1[8 + 5 + 4x] = 7 + -1(7x + 7) Combine like terms: 8 + 5 = 13 -1[13 + 4x] = 7 + -1(7x + 7) [13 * -1 + 4x * -1] = 7 + -1(7x + 7) [-13 + -4x] = 7 + -1(7x + 7) Reorder the terms: -13 + -4x = 7 + -1(7 + 7x) -13 + -4x = 7 + (7 * -1 + 7x * -1) -13 + -4x = 7 + (-7 + -7x) Combine like terms: 7 + -7 = 0 -13 + -4x = 0 + -7x -13 + -4x = -7x Solving -13 + -4x = -7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7x' to each side of the equation. -13 + -4x + 7x = -7x + 7x Combine like terms: -4x + 7x = 3x -13 + 3x = -7x + 7x Combine like terms: -7x + 7x = 0 -13 + 3x = 0 Add '13' to each side of the equation. -13 + 13 + 3x = 0 + 13 Combine like terms: -13 + 13 = 0 0 + 3x = 0 + 13 3x = 0 + 13 Combine like terms: 0 + 13 = 13 3x = 13 Divide each side by '3'. x = 4.333333333 Simplifying x = 4.333333333
| x+15+30+90=180 | | 2m=-6-8 | | x+63+83+48=180 | | 2(1)+2y=8 | | 180-16x+7+105+2x+14=180 | | 126+6x-1+5x+17=180 | | 5(x-4)=x+10 | | 80+60+5/*+5=180 | | 20=5m+40 | | x+15+30=180 | | 2(0)+2y=8 | | 5(1)+3y=-34 | | 5x+3x-2=38 | | 0=5m+40 | | x+54+83+48=180 | | 15x+30+90=180 | | -20=5m+40 | | -4.9x^2+14.7=0 | | 2-1+2y=8 | | 5x+5+45+90=180 | | 2x+15=47 | | 5x+45+90=180 | | 5x+5+90+45=180 | | 6x-1+5x+17=180 | | 41-5x+15x=9 | | 57+x+81+47=180 | | 3x+16=2x+19 | | 50+40+10x=180 | | -3n+9+5n=17 | | 5x-2=10+2x | | 80+60+5*+5=180 | | 50+40+x+10=180 |