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Simplifying 1 = 7x + -3(3x + -7) Reorder the terms: 1 = 7x + -3(-7 + 3x) 1 = 7x + (-7 * -3 + 3x * -3) 1 = 7x + (21 + -9x) Reorder the terms: 1 = 21 + 7x + -9x Combine like terms: 7x + -9x = -2x 1 = 21 + -2x Solving 1 = 21 + -2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2x' to each side of the equation. 1 + 2x = 21 + -2x + 2x Combine like terms: -2x + 2x = 0 1 + 2x = 21 + 0 1 + 2x = 21 Add '-1' to each side of the equation. 1 + -1 + 2x = 21 + -1 Combine like terms: 1 + -1 = 0 0 + 2x = 21 + -1 2x = 21 + -1 Combine like terms: 21 + -1 = 20 2x = 20 Divide each side by '2'. x = 10 Simplifying x = 10
| -5/2p=10 | | 6y-10=4y+20 | | 4x-4=42 | | 13=-5x+2(3x+2) | | 1x-10x-131=112 | | 5(z-4)+20=4 | | 5(n+4)= | | 1x-10x-13=112 | | x-3/4x/3x-9/8 | | 8x+11x-143=123 | | -0.2=k-19.8/-1 | | 2n+22+5n+25=180 | | 4(2x-3)-3(5x-7)= | | y=3(x-5)(x-7) | | R^2+6r-6=-8 | | -(x-5)=x-2 | | 8x+21x-143=123 | | x-(x*(22/100))=288600 | | x^2+-8x-20= | | 1.87(u-4)=7.48 | | -8(-5x-17)=576 | | .16m+m=f | | Z=4x-3y | | -2(4n-2)= | | -47+9x-12x=13 | | x-(x*(22/100))-288600 | | 6cos^2x=1+cosx | | -4x+4(4x-9)=24 | | 0.75h=-0.86 | | -4(2a-3)+5a=-9 | | -4x+4(4x-9)=34 | | x-(x*0.20)=288600 |