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Simplifying 4 = 5(x + -3) + -1(x + -7) Reorder the terms: 4 = 5(-3 + x) + -1(x + -7) 4 = (-3 * 5 + x * 5) + -1(x + -7) 4 = (-15 + 5x) + -1(x + -7) Reorder the terms: 4 = -15 + 5x + -1(-7 + x) 4 = -15 + 5x + (-7 * -1 + x * -1) 4 = -15 + 5x + (7 + -1x) Reorder the terms: 4 = -15 + 7 + 5x + -1x Combine like terms: -15 + 7 = -8 4 = -8 + 5x + -1x Combine like terms: 5x + -1x = 4x 4 = -8 + 4x Solving 4 = -8 + 4x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4x' to each side of the equation. 4 + -4x = -8 + 4x + -4x Combine like terms: 4x + -4x = 0 4 + -4x = -8 + 0 4 + -4x = -8 Add '-4' to each side of the equation. 4 + -4 + -4x = -8 + -4 Combine like terms: 4 + -4 = 0 0 + -4x = -8 + -4 -4x = -8 + -4 Combine like terms: -8 + -4 = -12 -4x = -12 Divide each side by '-4'. x = 3 Simplifying x = 3
| m+9=20 | | 5(2+x)= | | 4(3x-8)-5=4(x-3)-9 | | x^2+9x+17=2x+5 | | 2x-(3x+4)=6x-32 | | x^2-11x+25=1 | | (4r-3)-9(r+3)= | | 15a-6=8 | | 35(y+2)=5(6y+7) | | X+2x^2=3 | | 9x+9=7x+51 | | 3(2x+5)=16 | | -64x/4= | | 0.006(x+3)=0.007x+0.016 | | 7t-7r=2r-12r+3t | | 6x-(3x+13)=14 | | 62=1.068a-18.39 | | 18x^2=23x+6 | | 7x(3+2x)= | | 7(7x-2)=31 | | 0.50x+0.05(4-x)=0.10(-25) | | -12y*4y= | | 5(3x+2)= | | 6(6+8)= | | x^2-7+12= | | 3*4m= | | 15*12= | | z^2+11z+18= | | 9x-8=6x+16 | | (5a+1)(9-5)+7=31 | | (2x+1)(3x+7)= | | 12x-19=9x+9 |