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Simplifying 3(x + 3) + 4 = 7(x + 1) Reorder the terms: 3(3 + x) + 4 = 7(x + 1) (3 * 3 + x * 3) + 4 = 7(x + 1) (9 + 3x) + 4 = 7(x + 1) Reorder the terms: 9 + 4 + 3x = 7(x + 1) Combine like terms: 9 + 4 = 13 13 + 3x = 7(x + 1) Reorder the terms: 13 + 3x = 7(1 + x) 13 + 3x = (1 * 7 + x * 7) 13 + 3x = (7 + 7x) Solving 13 + 3x = 7 + 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 + 3x + -7x = 7 + 7x + -7x Combine like terms: 3x + -7x = -4x 13 + -4x = 7 + 7x + -7x Combine like terms: 7x + -7x = 0 13 + -4x = 7 + 0 13 + -4x = 7 Add '-13' to each side of the equation. 13 + -13 + -4x = 7 + -13 Combine like terms: 13 + -13 = 0 0 + -4x = 7 + -13 -4x = 7 + -13 Combine like terms: 7 + -13 = -6 -4x = -6 Divide each side by '-4'. x = 1.5 Simplifying x = 1.5
| (x+9)(x-9)= | | 3x=2x+19 | | 3y^3+2y^2+21y+14=0 | | 7(x+3)+2=7x+2 | | 15x+4+-10=23 | | (5c-6d)(5c+5d)= | | 6p+4=10+5p | | 9-5[3(x-2)]= | | x^3-30x+200=0 | | 4x+(x+4)+10(x-1)=23 | | 1.2x-2.6=0.4x+4.76 | | 12-3x= | | 24=10(x-1)+4x+(x+4) | | n+n-1=57 | | [7x]=63 | | 9x+12-3x-2=x+8+5x | | 12t^2+10t-12=0 | | 6-x-3=4x-8 | | -8x+15x-2y= | | 6u+3u-5u=30 | | 6y^4-10y^2+3=0 | | 100-64x^2=0 | | -5v+5=4+5v | | 3.9w-17.9=2.3 | | 8y-3=5(2y-1) | | 5x^2-39x+54=0 | | -(3x-5)= | | 7+3(x-5)=3[7-2(x+3)] | | 2p-7=19 | | 7x+-8+-2x+8=12 | | 2(-8)=-16-2 | | 8x+5=2x+17 |