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Simplifying 21 = 7(3x + -5) + 7(x + 8) Reorder the terms: 21 = 7(-5 + 3x) + 7(x + 8) 21 = (-5 * 7 + 3x * 7) + 7(x + 8) 21 = (-35 + 21x) + 7(x + 8) Reorder the terms: 21 = -35 + 21x + 7(8 + x) 21 = -35 + 21x + (8 * 7 + x * 7) 21 = -35 + 21x + (56 + 7x) Reorder the terms: 21 = -35 + 56 + 21x + 7x Combine like terms: -35 + 56 = 21 21 = 21 + 21x + 7x Combine like terms: 21x + 7x = 28x 21 = 21 + 28x Add '-21' to each side of the equation. 21 + -21 = 21 + -21 + 28x Combine like terms: 21 + -21 = 0 0 = 21 + -21 + 28x Combine like terms: 21 + -21 = 0 0 = 0 + 28x 0 = 28x Solving 0 = 28x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-28x' to each side of the equation. 0 + -28x = 28x + -28x Remove the zero: -28x = 28x + -28x Combine like terms: 28x + -28x = 0 -28x = 0 Divide each side by '-28'. x = 0 Simplifying x = 0
| 3-(9x)3/4=27 | | 17(19)=5x+20 | | 1024=46x-7 | | -200=4(6x-2) | | 7=w/5-9 | | 10(9)=2x-18 | | 195=-7x-2(7x-3) | | 2w+10=26 | | 0.35/n=0.032 | | 2n=3n-6 | | 4x^2=-448 | | 58=5v+13 | | 7(8+2x)=84 | | n-5n=12 | | 72+(f+30)=180 | | 78.34/n=0.7834 | | -5(x+8)=-5(-8+5x) | | x+x-40+x+40=180 | | -72=3x-6(-2x-8) | | 4p+7(2p-8)=-17 | | V/4-14=8 | | 5k-3.6+3.4k-1.8k-4= | | 3(3r+1)=21+6r | | k+10+6k=180 | | 25a-125=50a | | x+x-5+x-40=180 | | 3j+5j-9=180 | | 6x+12=4x+-18 | | 5(5-2x)-4=-2(-1+5x) | | 6x+12=4x-187 | | 9+2n-1=180 | | 8+m+3m=180 |