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Simplifying (2x + 21) + (5x + -1) + 90 = 180 Reorder the terms: (21 + 2x) + (5x + -1) + 90 = 180 Remove parenthesis around (21 + 2x) 21 + 2x + (5x + -1) + 90 = 180 Reorder the terms: 21 + 2x + (-1 + 5x) + 90 = 180 Remove parenthesis around (-1 + 5x) 21 + 2x + -1 + 5x + 90 = 180 Reorder the terms: 21 + -1 + 90 + 2x + 5x = 180 Combine like terms: 21 + -1 = 20 20 + 90 + 2x + 5x = 180 Combine like terms: 20 + 90 = 110 110 + 2x + 5x = 180 Combine like terms: 2x + 5x = 7x 110 + 7x = 180 Solving 110 + 7x = 180 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-110' to each side of the equation. 110 + -110 + 7x = 180 + -110 Combine like terms: 110 + -110 = 0 0 + 7x = 180 + -110 7x = 180 + -110 Combine like terms: 180 + -110 = 70 7x = 70 Divide each side by '7'. x = 10 Simplifying x = 10
| 4=1.2x | | 3x+12y=144 | | 6x^2-11x-147=-7 | | d^2-100=100 | | -0.4+0.15m=1+0.5m | | -5v=-v-6(v-1) | | 2(7)-y=10 | | x+29=4x+8 | | 14x^2+9x-8=0 | | 1-p=0.6 | | -2x-4=28 | | (9x+1)-(16x)= | | 2x^2+bx+8= | | 8t-6=2t+12 | | 26x-6-14x+2=24x-4-12x+15 | | 3x-6=10x-90 | | 4(x+35)=28 | | 4x=1.64 | | 3x(2x+1)=2(3x^2-6) | | 5x+3(5x)=20 | | 4-2x+4x=20 | | 5a^2+19a-30=0 | | 134+2x= | | 3(4x-3)-x=-5(2x-4) | | x+y+2=180 | | (5x+1)(13x+1)= | | (2x-19)+(x+47)+x=180 | | 3x+2(5x)=13 | | 4.3w+3.1=3.2(w+2) | | 2.3+3n=0.8+15 | | (2x+19)+(x+47)+x=180 | | -32-.625=-17 |