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Simplifying (7x + 90) + (3x + 50) = 180 Reorder the terms: (90 + 7x) + (3x + 50) = 180 Remove parenthesis around (90 + 7x) 90 + 7x + (3x + 50) = 180 Reorder the terms: 90 + 7x + (50 + 3x) = 180 Remove parenthesis around (50 + 3x) 90 + 7x + 50 + 3x = 180 Reorder the terms: 90 + 50 + 7x + 3x = 180 Combine like terms: 90 + 50 = 140 140 + 7x + 3x = 180 Combine like terms: 7x + 3x = 10x 140 + 10x = 180 Solving 140 + 10x = 180 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-140' to each side of the equation. 140 + -140 + 10x = 180 + -140 Combine like terms: 140 + -140 = 0 0 + 10x = 180 + -140 10x = 180 + -140 Combine like terms: 180 + -140 = 40 10x = 40 Divide each side by '10'. x = 4 Simplifying x = 4
| 7x^3-21x-770=0 | | 8x=4x+36 | | y^2=x^2+49 | | y=1/2*3+3 | | x^2-2x-3=9 | | N/5-12=22 | | 6x+2*2=12 | | -25.2p=201.6 | | 2569=9+5x2/3 | | 6x+2*0=12 | | x^4-2x^3=-10 | | 6(8)=25 | | 6+5r-5=8r+15-5r | | -7x^2+5x-18= | | 6*2+2y=12 | | 20=6ln(1.8)(1.8x) | | -7x^2+5x-18=-8 | | x*4-2x*3=-10 | | -0.8889=-8/9x+8 | | y+7=2x | | 4x^2+9x+0=0 | | 100=1.5x+x | | y=-8/9*0+8 | | (a+2+3)*(a+3)=a*(a+2)+105 | | y=-8/9x+8 | | 9.7=6ln(1.8)(1.8x) | | 1200(1.02x^8)= | | x+(x-2.32)=119.56 | | 10=5x^2-7x+4 | | (x+2+3)*(x+3)=105 | | 15=5x^2-7x+4 | | 2.50x=0 |