3 years ago

Please solve card 6!

Mathematics

2 answers:

Fudgin [204]3 years ago

8 0

X+x+30=90
2x+30=90
2x=90-30
2x=60
x=60/2
x=30

olasank [31]3 years ago

6 0

Answer:

×=30⁰ :)

Step-by-step explanation:

x⁰+(x+30⁰)= 90⁰

x⁰+x⁰= 90⁰-30⁰=60⁰

2x⁰=60⁰

60⁰÷2=30⁰ => x⁰=30⁰

verification:

30⁰+(30⁰+30⁰)=90⁰

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