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Simplifying 5x + (x + 6) = 3x + -1(-21) Reorder the terms: 5x + (6 + x) = 3x + -1(-21) Remove parenthesis around (6 + x) 5x + 6 + x = 3x + -1(-21) Reorder the terms: 6 + 5x + x = 3x + -1(-21) Combine like terms: 5x + x = 6x 6 + 6x = 3x + -1(-21) Multiply -1 * -21 6 + 6x = 3x + 21 Reorder the terms: 6 + 6x = 21 + 3x Solving 6 + 6x = 21 + 3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3x' to each side of the equation. 6 + 6x + -3x = 21 + 3x + -3x Combine like terms: 6x + -3x = 3x 6 + 3x = 21 + 3x + -3x Combine like terms: 3x + -3x = 0 6 + 3x = 21 + 0 6 + 3x = 21 Add '-6' to each side of the equation. 6 + -6 + 3x = 21 + -6 Combine like terms: 6 + -6 = 0 0 + 3x = 21 + -6 3x = 21 + -6 Combine like terms: 21 + -6 = 15 3x = 15 Divide each side by '3'. x = 5 Simplifying x = 5
| -v-5=0 | | X^2-5x+18=2+3x | | 2(8+3)=4(7+2x) | | 18(t-6)+3t=7(3t+4)-9 | | x^2-14x+5.666666667=0 | | ((-4w^2)+7w-3)+((5w^2)+2w+1)=0 | | y^2-12y+36=8 | | (8x)(4x)=60 | | logx=0.11 | | 1.25x^2-40x=64 | | 3+1=10x-2 | | 8u^3+20u^2+14u+35=0 | | (x+5-y)(x-5+y)= | | 12k^3-k^2-6k=0 | | 21z^2+41z+18=0 | | 4z^2+8z-21=0 | | =0.75+0.075 | | X^2+x-64=22 | | 4cos1/2x-cosx=0 | | 2tan^2x-6=0 | | W^2+64-16w= | | x^1/logx=5 | | 5+x+x^2=0 | | 1/6*(-6)-2= | | 1/7x(x)=-1 | | x+5+x^2=0 | | 19=6u-5 | | y^3+3y^2-25y-75=0 | | log(2x+1)=1-log(x-1) | | x^2(x^2-1)-4(x^2-1)=0 | | -2(x+5)=-28 | | 11=4-7u |