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Simplifying 9x + -7i = 3(3x + -7u) Reorder the terms: -7i + 9x = 3(3x + -7u) Reorder the terms: -7i + 9x = 3(-7u + 3x) -7i + 9x = (-7u * 3 + 3x * 3) -7i + 9x = (-21u + 9x) Add '-9x' to each side of the equation. -7i + 9x + -9x = -21u + 9x + -9x Combine like terms: 9x + -9x = 0 -7i + 0 = -21u + 9x + -9x -7i = -21u + 9x + -9x Combine like terms: 9x + -9x = 0 -7i = -21u + 0 -7i = -21u Solving -7i = -21u Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Divide each side by '-7'. i = 3u Simplifying i = 3u

| 18x-14i=6(6x-14u) | | 18x-14i=6(6x-21u) | | 8+5x-6=36 | | -(2x+3)=42 | | -2x(x+7)=37 | | 11x+22=0 | | 4x-8-3x+12=2x-6 | | 15n-1=44 | | 8n+9=73 | | -5(x-3)+2(x-6)=12 | | -2x+4y=12 | | 100-8x+20=2(x+5) | | 12x-6=12x | | (x-1)(2x+5)=0 | | 8x+16=10x-50 | | 2x+4=4y+4 | | x+3=2x+1 | | 2y+0.5=16 | | 12-3y=30 | | -2x=-7x+44 | | 2x+15=27-4x | | .5x-3=2 | | 2(x+3)=18 | | 4x+10=-22 | | 16(2x-2)=4(8x+5) | | 4x+7=-47 | | Y-15=12 | | 0.3x=17 | | 33x=17 | | 5-3= | | x(3x+11)+8=0 | | t-11=9-3t | | 12b=-108 | | 3b=36 | | 8z=5 | | A-18=-23 | | P-5=6-10p | | A+25=13 | | 5-z=-16 | | A-16=17 | | z-88=-4z+3 | | 6s-4=2s+100 | | A+23=27 | | -(8-3x)=13 | | 3x+2=-15 | | 15-4x=x-15 | | -3x+15=4 | | 5+2=35 | | 3k-3=11-4k | | 5*-11=-16 | | x*4=-8 | | 12-3=15 | | x+-6=4 | | 37=-2+5(x+6) | | 5-6=14 | | a-2+3=-12 | | 2x-5=8x+1 | | 42n-13=17n+12 | | 12n-13=17n+12 | | 19x-3=8x-6 | | 3(4n-5)-7=2n+8 | | g-3=9 | | 3(4n+5)-7=2n+8 | | 9=g+4 | | 7+r=11 |

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