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Simplifying (7x + 4) + (5x + 8) = 0 Reorder the terms: (4 + 7x) + (5x + 8) = 0 Remove parenthesis around (4 + 7x) 4 + 7x + (5x + 8) = 0 Reorder the terms: 4 + 7x + (8 + 5x) = 0 Remove parenthesis around (8 + 5x) 4 + 7x + 8 + 5x = 0 Reorder the terms: 4 + 8 + 7x + 5x = 0 Combine like terms: 4 + 8 = 12 12 + 7x + 5x = 0 Combine like terms: 7x + 5x = 12x 12 + 12x = 0 Solving 12 + 12x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + 12x = 0 + -12 Combine like terms: 12 + -12 = 0 0 + 12x = 0 + -12 12x = 0 + -12 Combine like terms: 0 + -12 = -12 12x = -12 Divide each side by '12'. x = -1 Simplifying x = -1
| .2x=61 | | -6-4p=4p-6p | | 2x(x+1)+12=18 | | X+2y+10=70 | | A(-3)+6(-4)= | | 0.15-7s=5.55 | | 2j-6=88 | | 0.15s+7=5.55 | | 0.80x+0.10(140)=0.40(31) | | 5c+3c+6-3=24 | | .30(-10000000)=1000000 | | 48k^2-6k=42 | | 6a+2a=-12+5a | | 4-3k=3+2k | | -4t^2+20t+1=0 | | -139=-x+3(-8+8x) | | 40p^2=-120+148p | | 7r-4(2r-8)=7r+3-(-7) | | v=-6+7v | | 7-k-2k=12 | | 4.56+19.5b=19.1b | | (4x+5)(5x-5)= | | 5x^2+160=-60x | | 5-2x+x=43 | | V-4=7v-10 | | 8x+2x+60+10x= | | 3p+0.75=5.88 | | 0=-16x^2+15x+5 | | y^2-20xy+100x^2=0 | | .3x+x=195 | | 3p-0.75=5.88 | | -1+6b=3+7b |