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90=2x+30
We move all terms to the left:
90-(2x+30)=0
We get rid of parentheses
-2x-30+90=0
We add all the numbers together, and all the variables
-2x+60=0
We move all terms containing x to the left, all other terms to the right
-2x=-60
x=-60/-2
x=+30
| 90=2x+30 | | 5-2x^2=6 | | 5-2x^2=6 | | 5-2x^2=6 | | 15n^2-6n=0 | | 5-2x^2=6 | | (6+v)(4v-3)=0 | | 3y=6+(2+y) | | 2-x=8+5x | | 2-x=8+5x | | 3y=6+2+y) | | 15n^2-6n=0 | | 15n^2-6n=0 | | 15n^2-6n=0 | | (6+v)(4v-3)=0 | | 6^(x+1)=36 | | (6+v)(4v-3)=0 | | 2(1x+9)=20 | | 2(1x+9)=20 | | 3(1x+10)=30 | | 6.5g+8=1.5g+18 | | 6.5g+8=1.5g+18 | | 6.5g+8=1.5g+18 | | 6.5g+8=1.5g+18 | | 6.5g+8=1.5g+18 | | 6.5g+8=1.5g+18 | | 6.5g+8=1.5g+18 | | 6.5g+8=1.5g+18 | | 6.5g+8=1.5g+18 | | 6.5g+8=1.5g+18 | | 8m+14=m-14 | | 3(1x+10)=30 |