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Simplifying 7x + 6(x + 3) = 109 Reorder the terms: 7x + 6(3 + x) = 109 7x + (3 * 6 + x * 6) = 109 7x + (18 + 6x) = 109 Reorder the terms: 18 + 7x + 6x = 109 Combine like terms: 7x + 6x = 13x 18 + 13x = 109 Solving 18 + 13x = 109 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-18' to each side of the equation. 18 + -18 + 13x = 109 + -18 Combine like terms: 18 + -18 = 0 0 + 13x = 109 + -18 13x = 109 + -18 Combine like terms: 109 + -18 = 91 13x = 91 Divide each side by '13'. x = 7 Simplifying x = 7
| 21a=18 | | 10.00+2.00d=6 | | 10.00+2.00d=60 | | 9x^2-y^2=18 | | 7x+7(4x-18)=84 | | 167=7x+3(4x-14) | | d^2-3d+12=0 | | 5p-3=12 | | -2cos(x)+3sin(x)=4 | | 0.25p+0.2(10+p)=0 | | 103=4x+5(2x-13) | | 4r+5-7-6r=5r+8 | | 4r+5-6r=5r+8 | | 5x+14-2x=9-[4x+2] | | 2x+3(2x-7)=35 | | 5x+2(5x-16)=133 | | 65000z=-253000 | | 4x+3(5x-17)=139 | | .2x+36=.8x-3 | | .5x+36=.8x-3 | | 142=3x+7(x+6) | | -2b-7=11 | | 3(9)+5y=12 | | 3(4)+5y=12 | | -57=-6x-3(x-8) | | 70=2x-4(-x-4) | | 25+25=180 | | 12y+36=90 | | -28=6x+2(-x+10) | | 12y+36=45 | | 4+1/2=5 | | 7x-4(-4x-16)=-166 |