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Simplifying 3x + 7 = 4x + 12 Reorder the terms: 7 + 3x = 4x + 12 Reorder the terms: 7 + 3x = 12 + 4x Solving 7 + 3x = 12 + 4x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4x' to each side of the equation. 7 + 3x + -4x = 12 + 4x + -4x Combine like terms: 3x + -4x = -1x 7 + -1x = 12 + 4x + -4x Combine like terms: 4x + -4x = 0 7 + -1x = 12 + 0 7 + -1x = 12 Add '-7' to each side of the equation. 7 + -7 + -1x = 12 + -7 Combine like terms: 7 + -7 = 0 0 + -1x = 12 + -7 -1x = 12 + -7 Combine like terms: 12 + -7 = 5 -1x = 5 Divide each side by '-1'. x = -5 Simplifying x = -5
| 6(4n)=90 | | x-6+3x=100-10x-50 | | -5=p+-20 | | -3b=3 | | 8x+5x-7x= | | (1)/(16))^(-n)*16^(n)=6^(1-2n) | | X^2-450=300 | | F(x)=-6x^2-6x+12 | | (3x+24)=(x+36) | | 1-x^2m=0 | | 0.5x-6=3 | | 1-mx^2=0 | | (2x-13)=97 | | 13-(x-9)=15 | | ln(x+7)+2=0 | | 14278.9227=1/3*1267.36 | | 40=17+x | | 5x+8i=3xi+2 | | 7x-4=8x-3 | | 4(x-7)=90 | | (5x-44)=(2x) | | (5x+30y)-(-5x-10y)= | | x-40=-8 | | 4(x+1)=2(x-2) | | g(x)=F(4+x) | | 467.1=1/3*81 | | 8x+43= | | t+(10-4)=20 | | 5x-6+7=5x | | 7w/3=14 | | 467.1=1/3*81*h | | 0x+3y-7=0 |