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Simplifying 7x + -1(2x + -6) = 21 Reorder the terms: 7x + -1(-6 + 2x) = 21 7x + (-6 * -1 + 2x * -1) = 21 7x + (6 + -2x) = 21 Reorder the terms: 6 + 7x + -2x = 21 Combine like terms: 7x + -2x = 5x 6 + 5x = 21 Solving 6 + 5x = 21 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + 5x = 21 + -6 Combine like terms: 6 + -6 = 0 0 + 5x = 21 + -6 5x = 21 + -6 Combine like terms: 21 + -6 = 15 5x = 15 Divide each side by '5'. x = 3 Simplifying x = 3
| n-5(-5n+6)= | | 5(9x-8)-5x=9x-9 | | .0169=c | | 6(9-7)-3(4-9)=0 | | solvex+8=11 | | 8(n+3)-8=8-7(3n+3) | | 2(1+v)-5v= | | 2x^2=-1.2 | | Then(fog)(-4)= | | 2x+5-4[x+3]=-3[x-3] | | 2(3x+6)+7= | | -(5a+7)-3(a-9)= | | 4(3n-5)+2n= | | 28-6a=4a-4(a+3) | | 2x+3=4+14 | | 4x+7+2x=4+8x-7 | | 25=-3(2)+1 | | -136=-4(2+4a) | | 3n+4(6n-7)= | | 3x+5-6(x+1)=2x+3 | | 8x+9y=-5 | | 5x-17=77 | | 8+5v=8(1-3v) | | 2(6-4z)-2(4z+8)=z-12 | | 0.6f+2=0.4f+4 | | 2m+5(m+7)= | | 3x+90=540 | | 3(x-4)-4(x-3)=x+3-1(x-2) | | 4(1-4x)=-5x+15 | | 3x+22=77 | | t=s-16 | | 3x-90=540 |